Looking for someone? 5 best people search engines

Are you looking for someone from school, or stalking someone? If so, according to lifehacker, the five best people search engines are:

• Pipl - Great people search engine because of its deep crawling abilities (goes into databases and indexes that are not normally searched by other people search engines)
• Google - great because of its indexing of ever increasing online profiles.
• Facebook - with 150 million users, you have a pretty good chance of finding someone you know.
• Spock - polls information from multiple sources and supports email notifications if your search changes.
• 123people - also digs deep to find people's blogs and online profiles.

Original article: Five best people-search engines @ LifeHacker.