I think it'd be cool to get a bunch of people from the community together to have a Wikinight where we use the open-source platform LocalWiki to begin work on compiling a wiki of locality knowledge. I've started a page for Savannah here.
How does this differ from WikiPedia in general?
It'd be essentially a hyperlocal wikipedia with stuff that may not be approved by WIkipedia but is still of significance to Savannahians. Also, it's mapped out.