Well, that's a bummer. =/
We COULD completely over populate the Foster's section with lots and lots and lots of facts.
I dunno. It says if it gets popular enough...
Plan A: Enlist every Foster's fan you know to bookmark the Foster's Wikia Page and visit it every day for at least five minutes for a month. Hopefully that'll give it enough hits for the Wikipedia owners to notice its popularity and e-mail you back, Marty, and we'll have the Wikia.
Plan B: E-mail them back and whine about how popular Foster's is, and how the Simpsons has its own Wikia, and don't leave them alone until they give you the Wikia.
Plan C: ... still working on it.