PPC Web Spy

PPC Web Spy is a Mozilla Firefox add on that was created by Brad Callen and is available free. It is a keyword tool that helps you come up with your keywords (a bread and butter SEO expert application) and allows you to see the various keywords that different affiliate marketers are fighting it out for (bidding wise). It allows you to see where the big bidding wars are going on, and which little keyword terms/phrases are being neglected. If you have Mozilla Firefox then you can run it whilst browsing on the internet.
As a side note you should really use internet explorer and Firefox. Both are free and both offer different perks and flaws for web browsing. You may find that some websites function better on one over the other (play trade at play.com for example works better on Firefox).
By placing your competition's domain name, you will be able to make a more targeted set of keywords and build it into your own giant list. Affiliates of ClickBank.com, Amazon.com and Paydotcom.com who promote using Adwords will also be displayed when you run the plug-in. The exact landing pages of each affiliate will be open for your viewing without charging them a fee. You will be able to spy on their stats as well the internet prefaces they use to attract their buyers. All these are critical information in getting ahead in the internet marketing business.