When sourcing passive candidates on the Internet most recruiters only use Google, which in my opinion is a big mistake. You should always have a healthy variety of search engines at your disposal to source with... at a very least you should also use Live and AltaVista as well. Engines index differently and in my years of searching I have found on numerous occassions CVs in one search engine that did not feature in another.
Here is a list of European search engines to be aware of.
