I have played a little with the Google's technology to develop a search engine dedicated to the Security (of Internet, Computer, Networks...)The search engine can be found at this adress:
For the moment only those urls are recorded for researches:
http://edition.cnn.com/2006/LAW/11/20/internet.libel.ap/index.html(Court OKs broad Web libel immunity)
http://edition.cnn.com/2006/LAW/11/20/internet.libel.ap/index.html(Hackers plant virus on Website of China's largest bankcard operator)
http://www.guardian.co.uk/frontpage/story/0,,1953213,00.html(GPs revolt over patient files privacy)
http://www.cylab.cmu.edu/(Carnegie Mellon CyLab)
In fact I use it at my office, but it seems that it is not yet enough mature for the moment only : there are not enough urls in its database... So if some people want to take part to the adventure or post some interesting url...