CPC - Advertiser's view

As an advertiser, which CPC programs have you used and what are your viewpoints on them?

Personally, I have used Adwords. I found them good but a little expensive since I dont sell any products as of now.

I have just signed up for a Kanoodle account. I will update on how it performs.

Are there any other CPC programs which give a good ROI?

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I suppose SearchFeed would be fine, as it has very low prices, but I can't really tell as I never used them as an advertiser.

I used bidvertiser once, but with no good results at all.

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