"Google Inc. said European antitrust authorities have opened a preliminary inquiry into complaints about its tactics made by three European Internet companies.

The inquiry, disclosed late Tuesday, appears to focus largely on complaints that Google unfairly ranks the sites of the Internet competitors, in effect lowering their rank in search results that appear on Google sites.

Google denied violating European law or taking any action to stifle competition.
...."

Link to WSJ:
http://online.wsj.com/article/SB10001424052748704188104575084062149453280.html

Also
http://www.nytimes.com/2010/02/24/technology/24google.html

There is one more reference:

http://googlepublicpolicy.blogspot.com/2010/02/committed-to-competing-fairly.html