Most people I interact with are on Facebook, so a Facebook search can work wonders, especially if the person I’m looking for is under 25 years old and has an actual picture of themselves up as their profile pic. But 1/5 internet users aren’t on Facebook right now, and there are plenty of double matches on Facebook that are hard to differentiate between.

But finding profiles on social networks isn’t the only reason that I like the relatively-new people search engine pipl.com . It also brings back web and news results from all kinds of niche sites, forums, and blogs.

Combine this with the ability to add custom geographical fields, and Pipl.com is a must-try. It will then quickly turn into a must-use.

Great use case: After doing a whois lookup for a domain you’re thinking about buying, you can then find out all kinds of information on the person who’s holding that domain.

Its scary how much you can find out about someone in a matter of minutes, especially if they have a relately unusual name.