I'm using several keywords spying tools (some free, some with a monthly registration fee), but this one is really different as it is a Firefox plugin and you have instant access to the keywords any advertiser is bidding on in Adwords. When you do a search on Google, a "View Keyword" button appears under each sponsored link and you will see the keywords and the current bid price the advertizer has paid. You can copy the keywords in the clipboard for a futur use or directly into your Adwords campaign. Well, the site looks a little bit like a "get rich" scam, speaking about an incredible software and so on....while in fact it is just a handy FF plugin, showing the same informations that you could get from KeywordSpy or SpyFu websites. I'm currently using the Free option and find it really usefull, although I can only see 10 keywords. (need to be platinium to see all the keywords). There are several access level (Free, Silver, Gold and Platinium), and each level will see more keywords that the previous level. There are some limitations that I have found so far: 1) Sites must be advertizing for at least 45 days in order to get information. 2) The tool does not work thru proxy servers, which is a problem for me as I'm in France and doing mainly affiliate marketing in the US. I have to use a proxy to see how the ads display in the US, and I can't use this tool.
If you are plugin the fire fox then it is really very interesting and great that can be one of the best platform to add the plugin it is one of the adword campagion these all are great and best way for blogging experience.
I've just installed this addon for my firefox. What should I say. In general - it's not a bad idea, but it sucks when you start to use it. It works not for all requests, it can't check a lot of ads, cuz they adv less than 45 days. I guess it's only if you use free version of this addon. But in general i'm happy that I've installed it.