Will we be able to "sign up" for lists and get the bumps to the lists in our self search in the final version?
A modest proposal: lists for each of the locations that have flags availiable for profile pages, which would bump everyone flying that flag. For example, Illinois_list would bump me and everyone else listing Illinois.
If you are interested in a topic area why don't you do an active search for the latest post's in that topic area using the scheme as described here?
To me it seems much more efficient!