Has my site been hacked?

I think my wordpress site has been hacked. My website’s URL is http://www.techverse.net . Today when I was checking the backlinks to my site, i found some outgoing links with the ” bingo ” text. When I did a Google search for my site with the word ” bingo “, I found there were some iframe pages which pointed to bingo sites. Here’s one of the infected pages: http://techverse.net/?p=bingo-sites .

Can anyone tell me how to get rid of these iframes?