On a whim, I created a group on Facebook, Genealogy of Commoners. I think this link might work, but with Facebook and me you never know
http://www.facebook.com/group.php?v=app_2373072738&ref=mf&gid=117590371589865#!/group.php?gid=117590371589865&ref=mf
I even created a blog, too:
http://commongenealogy.blogspot.com/
We'll see how it takes off--all in fun. I'm a little fatigued with all the "genealogy of the famous" things that are floating around.