B3ta (, rhyming with "Peter") is a high-profile British website, described as a "puerile digital arts community" by The Guardian. It was founded in 2001 by Rob Manuel, Denise Wilton and Cal Henderson. B3ta's main feature is a newsletter featuring the latest work of the B3ta community and other interesting, humorous or perverse things found on the Web. The newsletter is published weekly and has about 100,000 readers. A message board allows members to post digital images and short animations they have created, the ones considered the best appearing on the front page, along with various announcements. Previously there was a B3ta radio show on the London station Resonance FM. To inspire creative works, B3ta poses a weekly image challenge, such as "if cats ruled the world", and a "question of the week", for example asking "what's your most embarrassing injury?" Many popular Internet phenomena were created by B3ta members (also called "B3tards"). These include the Macromedia Flash cartoons created by Joel Veitch and Jonti Picking and the quizzes by Rob Manuel. In March 2006, it was announced that The Friday Project would be publishing a B3ta book entitled The Bumper B3ta Book of Sick Jokes. The book was published and made available from both online and real world bookshops on the 20th October 2006. The book consists of a series of "sick jokes" that were submitted and illustrated by B3ta contributors. A public wiki site (Sickipedia) was established to collect and edit joke material for the project.

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