I've started up a Google Site that acts like a wiki in that all collaborators on the site can edit any page. I've called this site BLAMguard, for lack of a better name, and I created it because I miss writing the kinds of RPG-like collaborative fiction that I used to do with the MBL, TOMB, and Vanguard in this forum.
Anyway, I'm looking for writers seriously interested in collaborative fiction. Rather than writing planned-out, solo-written stories, I'd like all site collaborators to directly follow up each chapter in a story, using characters created by others as well as those created themselves. If you're interested in such a venture, send me a PM with a short note explaining what interests you about it, and include your email address.
Last week I wrote the first chapter in a wikinovel based on a concept I'd originally thought of (but never used) for this forum called "The Chrononauts." It's a time travel team story in the sci-fi genre. I chose this kind of concept so that each story can take place in a different era or parallel universe. It's a great way to explore interesting history, ideas of the future, or fantastic parallel worlds. Take a look at the site here:
http://sites.google.com/site/blamguard/HomeFor now, I'd like to keep the new writing on the site to this one wikinovel. If it's successful, and if we can attract enough writers, another wikinovel could be started eventually. (I may also be posting older written stories of the MBL, TOMB, or Vanguard to archive them online, but they're not meant to be continued.)