I have various fan page. One with 50 000 Members and still growing without any promotion. I promoted upt to 20 000 and it grew by itself to 50 000. To bad it wasn't an official page and I didn't verify it...that was before community pages came out. I also have a group with 20 000 which is growing still. groups to me are useless if they are over 5000 members. I'm trying to delete the members but there's just too many and they keep growing. I promoted this to 10000+- and had it take off by itself. I do have more fan pages but they are smaller numbers just a couple thousands. Those are my two major pages.