Improve Search Engine Rankings: Not with Overture Content Match!

So I have content match turned on with Overture, and with my recent post about click fraud, it appears they are trying to make me a liar. One of the terms in my account is Improve Search Engine Rankings. My Overture content match usually costs me about $20 a month total, across a large number of words. In the last week I spent over $75 on that single term, at 44 cents a click, while my ad was in 3^RD position. Whats up with that?

I understand they enable certain terms on certain partner sites, but I just can't believe that traffic was legitimate.

I have not seen much sketchiness with their regular search product, just their content match on that specific term. Since it never really made any sales Overture content match has now been disabled :)