As internet marketers who work with Google Adwords well know, competition is key. Not only can you use it to judge if a niche market is profitable, you can also use your competition as the template to write your ads from.

If an ad’s been there a few weeks or more, it’s probably successful, and if you’re considering bidding on the keyword that brought it up, you might want to make note of what ad text they’re using.

Recently, Brad Callen sent me an email about his new tool, PPC Web Spy, and after checking it out, I have to say that I’m really impressed.

In a nutshell, PPC Web Spy is a Firefox Plugin that augments your ad research by allowing you to view which keywords your competition is bidding on as well as basic related data like Ad Position, CPC,  and other figures PPC advertisers need to know doing basic keyword research for PPC campaigns.

One of my favorite parts about PPC Web Spy is the fact that it also shows the ad’s destination URL, making it easy to get a feel for the relevancy score between the competition’s ad and their lander, and pick up any tricks or techniques they might be successfully using to drive conversions off their site.

Another very helpful feature about PPC Web Spy it is that it shows only data from advertisers who have been on Adwords for the last 45 days.

Initially, this might seem to be a limitation… but if the competitions been advertising for the last 45 days, chances are they’re making money. Or else not realizing they’re losing it. Either way, you win, and some decent information to factor into your own PPC Adwords campaign.

So, if you’re an Adwords marketer & haven’t checked out PPC Web Spy yet, you should. It will simplify your life while increasing your profits and exposing new keywords to drive traffic from. And as with everything on Pushing the Free Line, it’s free.

Click here for Brad Callen’s PPC Web Spy