What is the meaning of italics in your club list?

I'm pretty sure that it means that the club is still "Pending".

The F4 define Pending clubes this way:
"Pending clubes are new clubes created por fans like you. Once a pending club has a sufficient fan interest it is promoted to full club status."

So basically, if tu look at all of the italicized clubs, you'll probably notice that most of them are either small o aren't very active.

Hope this helps.