If you do not know where to start, and do not have a lot of money to spend, it is obvious that you should start with the free tools. Something you may have stumbled upon when you are a Pay-Per-Click advertiser are the free keyword search tools that Google AdWords, Yahoo and MSN provide.

Competitive Analysis: Free PPC Keyword Search Tool

If you want to find out more about the companies that you are bidding against, then maybe you should consider the free PPC Web Spy software. This Mozilla Firefox plugin will show you which phrases your competition is bidding on. If you do not have this Mozilla browser yet you can download the latest version of Firefox here.

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