Need a PPC alternative to Adsense

Hi all,
I need to get contextual text ads in a few of my sites in which Adsense is not working well.
Anybody know of a good alternative to Adsense? I can’t join Yahoo Publisher Network because I’m in Canada.
I have seen Azoogle Ads but I don’t know, is this any good?

Thank you all for your help,
Sam

Original post by sam79