There is also an organised effort to create more critters for Fonline, which will have allot of cross over resources for FO2 modding (they are working with FO2 FRM as well), so it is worth watching their progress as well. Incidentialy there are some interesting new critter sprites on their web forum.
In related news, Bogreleased an intersting new program, which allows for the easy recolouring of existing sprites.
Wikia community blogs allow you to contribute a blog post to any wiki's Community Blog.
Blogs are used by wiki communities for fan fiction or original work, news and announcements, questions or recommendations to the community, or reviews or op-eds. Check out Fallout Wiki's News Blog and Lostpedia's Theories Blog to see two examples.