List of Internet forums

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 blogs, business networks, enterprise social networks, forums, microblogs, photo sharing, products/services review, social bookmarking, social gaming, social networks, video sharing and virtual worlds.

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