To identify the keywords used by your competitors in their pay per click campaigns, there a few tools aout there. Most work on .com domains.

But some effort seems to into other languages.

The keyCompete
http://www.keycompete.com/home.asp
and
http://www.longtailadwords.com/
seem to produce a result for .fr and .uk

both Tiger Technologies. They let you try a few keywords and domains for free. Worth it ?

I made test with Yoovi's Top50 websites (http://www.yoovi.com/top50.php). Some of them are heavy advertisers on french CPC market but Keycompete find only 2 or 3 keywords.

Seems to work better with anglophone keywords/web sites.


Note : The concept is very promising. Maybe my company will build such a tool for french market. But we already have projects for forthcoming month...

How about using KeywordSpy? - This will give you an opportunity to immediately track down your competitors and gather keywords for the promotional campaign of your online business. It offers Free trials.

KeywordSpy is keyword research technology where you can also earn and even surpass what your competitors are making with Google Adwords and Overture. KeywordSpy gives you the key to their success: a good ad-campaign with the right keywords.

It also has a ClickBank Affiliates Search Engine where you can see the actual market landscape at ClickBank.