What Is The Meaning Of Club In Common? And Why Does I Only Can See It In Other Fan Page?

It means..that Du and other Fanpop users like the same things so there in the club too, and Du only see it on other users page not on you're page cuz it tells Du what Clubs Du have the same as the user whom you're visiting their profile..if Du don't get it just wait for Mehr explanations

it'd called CLUBS IN COMMON what do why think it means?

Like someone else said, it shows the Clubs that other people have joined that Du have also joined.

It's a way of seeing if Du have common interests with another user. ^^