Serial Stalker

A person who continuously searches for people on the Internet, Facebook, and other social media with limited personal information initially given. Can locate a person given only a first name, a picture, or various descriptions. Will search for hours until the correct person is identified. Repeats this process on a daily basis.

"Hey Anthony, I met this girl named Sarah at the club last night. Here's a picture of us. You're such a serial stalker, you'll find her in like 5 mins."
"Already done. I'm that good."