Prize Suggestion

well m planning for a contest n my forum,can anyone plz suggest me sum kind of prize for a fansite?

What kind of site are you running?

As a general, many forums choose a special individualised rank for the winner. Other forums would propose an avatar/signature.
If you're thinking of something else, it would really help to know the context of the forum and the contest

On my site we also have a auction page (like eBay). We use the thanks button as a legend growth. When you reach legend of 50 they get 5 dollar credit on the auction site. And every 50 above that the credit goes up 5 dollars.

The auction site itself has a contest mod. We have a contest to see who can list the most auctions, sell the most etc and them prizes are usually 50-100 dollar credits on the auction site.

I have been fortunate to hook up with a couple sites through forumotion. I get to advertise the auction site on their site and I in turn provide prize support for their contests (I create credits for their members on the auction site)