How to optimize your adsense ads?

@VotreAmie (3028)
United States
April 11, 2009 8:18pm CST
I have a site where I put google ads. Sometimes the ads have nothing to do with my site's content. Is there anything to do to make the ads the same subject as my content? I heard about channels but I just read that channels don't help in targeting your ads. Thank you.
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