Snitch.name is a site which lets you search social network sites for a person by his first and last name in one single interface. What it does is quite simple – instead of you having to go and search for someone separately on Facebook, Twitter, Flickr or MySpace, it presents you the search results from those sites in separate blocks on one page.
The site searches and lets you find people on popular social networks such as Facebook, MySpace, Flickr, LinkedIn, Hi5, Twitter Google, WordPress.org blogs and video sites like Vimeo. Additionally you can also make it search academic sites like MIT, Stanford, Oxford and Google Scholar.
Source: makeuseof.com