I'd be interested in setting this up Wayne but as Steve said I don't want to duplicate if not needed. As Steve said there is the Social Media wiki and there is also GovITWiki.com as well.
I agree that there is a ton of knowledge on GovLoop and I'm working to put it in a more structured way - such as my attempt with the Knowledge tab. But I think that is just the tip of the iceberg.
What information would you like to see? How would you like it structured? What technology platform would you use?
Something like a crunchbase.com, govitwiki.com, etc?