Use search engines to track employees that currently work there.
There are over 130 million blogs in Technorati and you can search through them to possibly find someone who works at one of your top five companies. You can search through corporate groups, pages and people on Facebook. You can even do the same on Twitter. Then there are people search engines such as pipl, peek you, and wink. Once you find a contact name, try googling it to see if there is any additional information about
