I think Pages are more appropriate for SMM. But Page or Group pleeeeeease don’t invite me to be a Fan or Member if it’s nothing more than an advertisement with a link to a portal or casino site! Like more regular FB users, I get several invitations every day that I delete without looking at because so few offer any actual benefit to membership. Do many people willingly give their email address just to receive spam? No. Do I want you interrupting my personal interactions on FB with advertising? No.