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Christopher Reaves Messina (born January 7, 1981) is an American blogger, product consultant and speaker who proposed the usage of the
hashtag A hashtag is a metadata tag operator that is prefaced by the hash symbol, ''#''. On social media, hashtags are used on microblogging and photo-sharing services–especially Twitter and Tumblr–as a form of user-generated tagging that enable ...
as it is currently used on
social media Social media are interactive technologies that facilitate the Content creation, creation, information exchange, sharing and news aggregator, aggregation of Content (media), content (such as ideas, interests, and other forms of expression) amongs ...
platforms. In a 2007 tweet, Messina proposed vertical/associational grouping of messages, trends, and events on Twitter by the means of hashtags. The hashtag was intended to be a type of
metadata tag In information systems, a tag is a keyword or term assigned to a piece of information (such as an Internet bookmark, multimedia, database record, or computer file). This kind of metadata helps describe an item and allows it to be found again ...
that allowed users to apply dynamic, user-generated tagging, which made it possible for others to easily find messages with a specific digger theme or content. It allowed easy, informal markup of
folksonomy Folksonomy is a classification system in which end users apply public tags to online items, typically to make those items easier for themselves or others to find later. Over time, this can give rise to a classification system based on those tag ...
without need of any formal
taxonomy image:Hierarchical clustering diagram.png, 280px, Generalized scheme of taxonomy Taxonomy is a practice and science concerned with classification or categorization. Typically, there are two parts to it: the development of an underlying scheme o ...
or
markup language A markup language is a Encoding, text-encoding system which specifies the structure and formatting of a document and potentially the relationships among its parts. Markup can control the display of a document or enrich its content to facilitate au ...
. Hashtags have since been referred to as the "eavesdroppers", "wormholes", "time-machines", and "veins" of the Internet. Although Twitter's initial response to Messina's proposed use of hashtags was negative, stating that "these things are for nerds" a series of events, including the devastating fire in San Diego County later that year, saw the first widespread use of #sandiegofire to allow users to easily track updates about the fire. The use of hashtags itself then eventually spread on Twitter, and by the end of the decade could be seen in most social media platforms including Instagram, Facebook, Reddit, and YouTube. Instagram even had to officially place a "30 hashtags" limit on its posts to prevent people from abusing the use of hashtags. Instagrammers eventually circumvented this limit by posting hashtags in the comments section of their posts. , more than 85% of the top 50 websites by traffic on the Internet use hashtags. Messina subsequently went on to become the Developer Experience Lead at
Uber Uber Technologies, Inc. is an American multinational transportation company that provides Ridesharing company, ride-hailing services, courier services, food delivery, and freight transport. It is headquartered in San Francisco, California, a ...
from 2016 to 2017 and ranks as the No. 1 hunter on ProductHunt.com. He is a technology evangelist who is an advocate for
open source Open source is source code that is made freely available for possible modification and redistribution. Products include permission to use and view the source code, design documents, or content of the product. The open source model is a decentrali ...
,
open standards An open standard is a standard that is openly accessible and usable by anyone. It is also a common prerequisite that open standards use an open license that provides for extensibility. Typically, anybody can participate in their development due to ...
,
microformats Microformats (μF) are predefined HTML markup (like HTML classes) created to serve as descriptive and consistent metadata about HTML element, elements, designating them as representing a certain type of data (such as address book, contact info ...
, and
OAuth OAuth (short for open authorization) is an open standard for access delegation, commonly used as a way for internet users to grant websites or applications access to their information on other websites but without giving them the passwords. Th ...
. Messina is also known for his involvement in helping to create the BarCamp, Spread Firefox, and
coworking Coworking is an arrangement in which workers for different companies share an office space. It allows cost savings and convenience through the use of common infrastructures, such as equipment, utilities and receptionist and custodial services, a ...
movements.


Career

Messina was employed as an Open Source Advocate at identity company Vidoop and before that was the co-founder of marketing agency Citizen Agency. He worked at Google as an Open Web Advocate,Happy Birthday, Chris Messina, And Enjoy Advocating The Open Web At Google
TechCrunch (January 7, 2010). Retrieved on 2014-05-23.
leaving to join startup NeonMob. He graduated from
Carnegie Mellon University Carnegie Mellon University (CMU) is a private research university in Pittsburgh, Pennsylvania, United States. The institution was established in 1900 by Andrew Carnegie as the Carnegie Technical Schools. In 1912, it became the Carnegie Institu ...
in 2003 with a BA in Communication Design. From 2016 to January 2017, Messina lead the Developer Experience team at
Uber Uber Technologies, Inc. is an American multinational transportation company that provides Ridesharing company, ride-hailing services, courier services, food delivery, and freight transport. It is headquartered in San Francisco, California, a ...
where he enforced the terms and conditions of Uber's proprietary APIs. Messina co-founded Citizen Agency, a company which describes itself as an "Internet consultancy that specializes in developing community-centric strategies around product research, design, development and marketing" with Tara Hunt and Ben Metcalfe, who has since left the company. Messina has been an advocate of
open-source software Open-source software (OSS) is Software, computer software that is released under a Open-source license, license in which the copyright holder grants users the rights to use, study, change, and Software distribution, distribute the software an ...
, most notably
Firefox Mozilla Firefox, or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. It uses the Gecko rendering engine to display web pages, which implements curr ...
and Flock. As a volunteer for the Spread Firefox campaign, he designed the 2004 Firefox advert which appeared in ''
The New York Times ''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of ...
'' on December 16, 2004. In 2008, he won a Google-O'Reilly Open Source Award for Best Community Amplifier for BarCamp,
Microformats Microformats (μF) are predefined HTML markup (like HTML classes) created to serve as descriptive and consistent metadata about HTML element, elements, designating them as representing a certain type of data (such as address book, contact info ...
and Spread Firefox. In February 2018, Messina launched Molly, an AMA-style website where the questions are answered using the person's social media posts.


Proposing the hashtag

Social campaigns have begun to be titled in a hashtag form. The
International Telecommunication Union The International Telecommunication Union (ITU)In the other common languages of the ITU: * * is a list of specialized agencies of the United Nations, specialized agency of the United Nations responsible for many matters related to information ...
(ITU) approved in November 1988 a recommendation that put the hash sign on the right side of the 0 in the button arrangement for push buttons on telephones. This same arrangement is still used today in most software phones (see Android dialer for example). The ITU recommendation had two design options for the hash: a European version where the hash sign was built with a 90-degree angle and a North American version with an 80-degree angle. The North American version seems to have prevailed as most hash signs in Europe now follow the 80 degree inclination. The
pound sign The pound sign () is the currency symbol, symbol for the pound unit of account, unit of Pound sterling, sterling – the currency of the United Kingdom and its associated Crown Dependencies and British Overseas Territories and previously of Kin ...
(not to confused with the pound currency sign) was adopted for use within
IRC IRC (Internet Relay Chat) is a text-based chat system for instant messaging. IRC is designed for group communication in discussion forums, called '' channels'', but also allows one-on-one communication via private messages as well as chat ...
networks to label groups and topics. Channels or topics that are available across an entire IRC network are prefixed with a hash symbol (as opposed to those local to a server, which use an
ampersand The ampersand, also known as the and sign, is the logogram , representing the grammatical conjunction, conjunction "and". It originated as a typographic ligature, ligature of the letters of the word (Latin for "and"). Etymology Tradi ...
). HTML has used # as a
fragment identifier In computer hypertext, a URI fragment is a string of characters that refers to a resource that is subordinate to another, primary resource. The primary resource is identified by a Uniform Resource Identifier (URI), and the fragment identifier poi ...
from the very start of the World-Wide Web (). The use of the pound sign in
IRC IRC (Internet Relay Chat) is a text-based chat system for instant messaging. IRC is designed for group communication in discussion forums, called '' channels'', but also allows one-on-one communication via private messages as well as chat ...
inspired Chris Messina to propose a similar system to be used on Twitter to tag topics of interest on the microblogging network. He posted the first hashtag on Twitter. Messina's suggestion to use the hashtag was initially not adopted by Twitter, but the practice took off after hashtags were widely used in tweets relating to the 2007 San Diego forest fires in Southern California. According to Messina, he suggested use of the hashtag to make it easy for "lay" users to search for content and find specific relevant updates; they were for people who do not have the technological knowledge to navigate the site. Therefore, the hashtag "was created organically by Twitter users as a way to categorize messages." Today they are for anyone, either with or without technical knowledge, to easily impose enough annotation to be useful without needing a more formal system or adhering to many technical details. Internationally, the hashtag became a practice of writing style for Twitter posts during the 2009–2010 Iranian election protests; Twitter users inside and outside Iran used both English- and
Persian Persian may refer to: * People and things from Iran, historically called ''Persia'' in the English language ** Persians, the majority ethnic group in Iran, not to be conflated with the Iranic peoples ** Persian language, an Iranian language of the ...
-language hashtags in communications during the events. The first published use of the term "hash tag" was in a blog post by Stowe Boyd, "Hash Tags = Twitter Groupings," on August 26, 2007, according to lexicographer
Ben Zimmer Benjamin Zimmer (born 1971) is an American linguist, lexicographer, and language commentator. He is a contributing editor for ''The Atlantic''. He was formerly a language columnist for ''The Wall Street Journal'', ''The Boston Globe'', and ''The ...
, chair of the
American Dialect Society The American Dialect Society (ADS), founded in 1889, is a learned society "dedicated to the study of the English language in North America, and of other languages, or dialects of other languages, influencing it or influenced by it." The Society p ...
's New Words Committee. Beginning July 2, 2009, Twitter began to hyperlink all hashtags in tweets to Twitter search results for the hashtagged word (and for the standard spelling of commonly misspelled words). In 2010, Twitter introduced "
Trending Topics Twitter, officially known as X since 2023, is an American microblogging and social networking service. It is one of the world's largest social media platforms and one of the most-visited websites. Users can share short text messages, imag ...
" on the Twitter front page, displaying hashtags that are rapidly becoming popular. Twitter has an algorithm to tackle attempts to
spam Spam most often refers to: * Spam (food), a consumer brand product of canned processed pork of the Hormel Foods Corporation * Spamming, unsolicited or undesired electronic messages ** Email spam, unsolicited, undesired, or illegal email messages ...
the trending list and ensure that hashtags trend naturally. Although the hashtag started out most popularly on Twitter as the main social media platform for this use, the use has extended to other social media sites including Instagram, Facebook, Flickr, Tumblr, and Google+.


Press

Messina was featured with Hunt, also his ex-girlfriend, in "So Open it Hurts", in ''San Francisco Magazine'' (August 2008). The article detailed their very public and open relationship shared on the internet, and the lessons they derived from that experience.


References


Sources


SF Chronicle: The people who populate Web 2.0
– November 5, 2006

– October 19, 2006
SF Tech Chronicles
– July 7, 2006
BBC Newsnight, Internet Part II: Return of the geeks?
– October 27, 2005
SF Gate Technology Chronicles
Alan Saracevic, May 30, 2006
SF Gate Technology Chronicles
Dan Fost, Ryan Kim, May 31, 2006
Barring None, Geek Camp Rocks
by Ryan Singel, Wired, August 22, 2005


External links


Messina's personal websiteBarCamp Wiki
{{DEFAULTSORT:Messina, Chris 1981 births Living people American bloggers Technology evangelists Carnegie Mellon University alumni People from Bedford, New Hampshire