One [great step][1] towards this goal: > Ever since launching, we’ve gotten requests to start dedicated > communities for niche programming topics, but we’ve always been > hesitant to do so for fear of balkanizing the great community we > already have. So we came up with a solution that provides the best of > both worlds. We can now create **a mini-site by selecting relevant tags** > (in this case, anything Facebook related) and grouping together just > the content from those tags. When you visit a mini-site, you’ll see > only the content from those tags. Not only will you be able to see > only questions related to Facebook, but **the reputation on the user > ranking pages will also only show reputation earned on questions > tagged** Facebook. > > The key to this functionality is that you’re seeing **a filtered view of > Stack Overflow**, much like if you set up a favorite tags view. That > means that when you ask a question on Facebook.SO, you’re still > getting access to the entire community of 750,000+ users, and any > questions you answer there count toward your Stack Overflow > reputation, too. [1]: http://blog.stackoverflow.com/2011/08/facebook-stackoverflow/