What is the best free site to find an e-mail address of someone along with their current address?

If I wanted to do a reverse lookup, what is the best free site where if I didn't know a person's e-mail address I could include a previous physical home address instead? I don't want to do a public background check, just wantu find a friend's e-mail included with a current address.|||You can try http://whitepages.com|||SEARCHBUG IS A DECENT ONE, www.searchbug.coom