Have you tried facebook? 3 yrs ago, when I first started out as an affiliate marketer, 90% of my ad spend was in adwords. At this point, my ad spend has tilted obscenely in facebook's favor over adwords.

I remember the hours I used to spend optimising my adwords. But not any more. I spend less than 5% of that time on adwords now. By xmas of this year, it should be down to 0.