Adsense/adwords question

Im looking for an alternative to adwords, something that can get my ads out at a lower CPC then adwords. Say for example I find one.
Adbrite charges me .05 per click, which is great for my keyword. So I start a campaign and start to bring in a nice amount of targeted traffic.
Say I also have adsense on my site, does google care? if i get some adsense clicks that were brought in by another ad network?

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