Variety reports that the network has just launched new Web sites for the shows, both of which begin this month. Fans of "Yo' Mamma," a trash-talking series in which contestants face off in an exchange of jokes, can upload their own video on Yomomma.tv, some of which will make it into the TV series. "Short Circuitz," a sketch comedy show which was taken off the air earlier this year, is returning with unseen clips and a good dose of UGC that users can post on Shortcircuitz.mtv.com, according to the network.

What we want to do is build something that isn't just the standard fan site -- and then create a path back to television," said Brian Graden, prexy of entertainment for MTVN Music Group and Logo.

Campaign comes as part of the net's launch of Web sites for the shows, which execs said will solicit content and then allow users to view and share it.

Move is also part of Viacom's push to unite online and television properties. MTVN nets have made similar forays with shows like VH1's "Acceptable.TV," in which user-submitted mini-TV episodes competed against professionally produced segs.