One of the better searches online is the People search. Use it to find email addresses, phone numbers, and home addresses.Yahoo offers one of the best online people searches. Just type in a name (first and last) and find friends, colleagues, classmates, and more. Their advanced search features for emails or address are comprehensive enough that if you know some information about the person you are trying to find, you can probably get the rest online. There is a large email database they pull from so that you can try to match a name to an email address.