The creators of JibJab have launched a comedy social network - JokeBox, which has been in private beta for three months, writes MediaPost. Some 40,000 members have already registered and posted more than 25,000 written jokes, photos, audio and video files - and provided personal information and content preferences. Bud Light is sponsoring the site with streaming banners, and JibJab-created shorts on JokeBox feature pre-roll advertising from Benadryl and the Suburban Auto Group Ford/Chevy car dealership, among others.

With a web presence since 1999 and established credentials in satirical animated shorts such as "This Land" - as well as 645,000 names in its opt-in email list - JibJab is poised to make its mark in the content-sharing realm occupied by YouTube and its ilk.

To keep out troublemakers, the Spiridellis brothers have rallied a volunteer squad - "The A-Hole Patrol" - to screen jokes submitted to JokeBox, including those flagged as "offensive" by other members.