An Internet forum, or ''message board'', is an online discussion site where people can hold conversations in the form of posted messages. They are an element of social media technologies which take on many different forms including

blog A blog (a Clipping (morphology), truncation of "weblog") is an informational website consisting of discrete, often informal diary-style text entries also known as posts. Posts are typically displayed in Reverse chronology, reverse chronologic ...

s, business networks, enterprise social networks, forums, microblogs,

photo sharing A photograph (also known as a photo, or more generically referred to as an ''image'' or ''picture'') is an image created by light falling on a photosensitivity, photosensitive surface, usually photographic film or an electronic image sensor. Th ...

, products/services review,

social bookmarking Social bookmarking is an online service which allows users to add, annotate, edit, and share Internet bookmark, bookmarks of web documents. Many online bookmark management services have launched since 1996; Delicious (website), Delicious, founded i ...

, social gaming,

social network A social network is a social structure consisting of a set of social actors (such as individuals or organizations), networks of Dyad (sociology), dyadic ties, and other Social relation, social interactions between actors. The social network per ...

s, video sharing and

virtual world A virtual world (also called a virtual space or spaces) is a Computer simulation, computer-simulated environment which may be populated by many simultaneous users who can create a personal Avatar (computing), avatar and independently explore th ...

s. Forums act as centralized locations for topical discussion. The Forum format is derived from BBS and

Usenet Usenet (), a portmanteau of User's Network, is a worldwide distributed discussion system available on computers. It was developed from the general-purpose UUCP, Unix-to-Unix Copy (UUCP) dial-up network architecture. Tom Truscott and Jim Elli ...

. This is a list of the most notable and significant Internet forums communities that have converged around topics ranging from medicine to technology, and vocations and hobbies.

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Further reading