Hit Tail

If you already have an established Adwords campaign, and a good amount of traffic going to your site, this is a great tool.

Install the code, then sit back for a week or two and let it collect data.

After you have 5-10k search term results, export them into an excel file. Import these (max 2k at a time) into Adwords and set the ppc at .01-.03

I have done this foor the last 3 month and all 4 of the campaigns are my top campaigns, and have dramatically reduced my cpc and cp conversion, while not being affected by google's new algo whatsoever. (I was already running a 3-4% CTR, which is the reason I say "if you already have an established Adwords Campaign)

Here's a link

GaryTheScubaGuy