I disagree with the above statement. I use PPC to drive traffic to new sites. The sites often have AdSense on them and I at least break even. I consider this free traffic and therefore a good deal. I keep my bids low and if that means appearing in slots 4 or 5 on search results pages, so be it. I also don’t raise bids to the minimum just because Google says I have to for the keyword to become active. Instead, I just move on to cheaper terms.

But otherwise, I agree that organic traffic is the better alternative and where I focus much of my efforts.