The top two new techniques for email harvesting is Craigslist Ad’s and Facebook Friend Requests.
If you use Facebook, I’m sure you’ve received a few random friend requests from people you don’t know. These requests are actually email harvesting attempts. If you reply or accept the friend request, they will most likely grab your real email – which was the original intended purpose.
The Craigslist Ad technique is similar. If you post an Ad on criagslist there is a very good chance someone will reply. Not all the replies are real people however, in fact, many of the replies are from robots. The response will be generic, for example, “I’m interested, contact me”. If you reply to that email, boom, the robot just grabbed your real email address.