Snooping on a Facebook account, maybe.

Of course, you won't be doing the snooping, obviously. You're just going to be looking at this tool to see how much information is out there about you, so that you can check your own settings. :) However, if you do want to find out more information about someone, then you just might want to take a look at this tool, which is a Facebook graph search tool. All that you need to do is find the person that you're interested in, and input their name into the tool. That then gives you their Facebook ID and then the snooping, err checking can begin. Much of this you can do with a simple search, such as "Posts commented on by phil bradley" but this gives you a nice quick way of doing it, just with a button press. This is the interface that you'll get to play with:

In case you're wondering, the number in the search box is mine, so you can poke around to your hearts content to see what I'm commenting on and so on. Obviously this is only going to work for public material, not stuff that's private, but that can still be quite useful information. 

Again, it's worth mentioning that you can simply do this by going to Facebook and typing in the appropriate search in the search box - "Photos tagged with Phil Bradley" for instance but as I've said, having it set out like this is a nice quick way of getting access to the information that you're interesting. 

The tool also gives you other search options, such as searching for the most recent postings on a particular subject, location searches which are very good actually. It's easy to run a search to find out if a person in a particular location has visited another location. This isn't quite so easy to find with the normal Facebook search options. You can also find where particular people have visited, and also the bars, bookshops, restaurants, gyms, hotels, and cinemas that they have been to, which is all perfectly above board, and public knowledge, but it's still a bit on the freaky side, if you ask me. 

All told, it's a really interesting little tool and worth exploring - if only to see how much of your own personal information is bleeding out on Facebook.