Very good idea to have the wiki more present, something like "SEARCH THE WIKI - Get answers here". So people can just drop a keyword and see whats already there.
IMHO it's a bit cluttered/unclear too, esp. for beginners to get an overview. Probably would be a good idea to have less categories in the future, as a topic could fit to multiple categories as it is now.
Also, the community pages take very long to load and aren't rendered correctly (in Firefox + IE9).