Hi Colleene, are you able to see your new mob members at your Familia page? http://apps.facebook.com/la_cosa_nostra/alliances/allies_view or is this a problem with the mob member count updating?
What level are you Colleen? Remember only 2 mob are added per level until level.. ermmm.. too long ago for me hehehe. And you max at 1000 mob. The other 1000 are Hired Guns.
