Adwords..A question or two..

Has anyone here had any success getting cheap clicks with the content network? I ran a campaign last week for the clickbank product FatLoss4idiots, and had like 1300 keywords in adgroups of 50.. and i was getting 3 cent clicks.. like 100 clicks an hour the first 5 hours.. then each adgroup got horrible quality scores one by one and i stopped getting clicks.. lots of the keywords had nothing to do with the landing page.. like oprah and stuff ha.. but i got 2 sales for a total of 63 bucks.. the first two sales were within spending 20 bucks or so..

Yeah, so the content network is badass. I'm working on a blog for some cpa offers.. and I have a few pages of content but I think I need a lot more? I've read somewhere around here to have around 30 for an awesome quality score! I'd like it to be above 7.. I got 10/10 for young and restless somehow lol so i know its possible

and also, how much original content should I have vs. free article stuff, whatever? I'm gonna do the cheap click thing again.. might not convert as well as search, but even at 1:700 i can still make about 10 bucks after adspend per 30 dollar lead

Thanks...