This is NOT an official Facebook™ product, but it uses the search engine of Facebook™.
fearch! is cool 'cause it requires no registration, login and you can still search on the coolest social network!
Personal note: Sometimes I just want to search for someone or something and I don't care about Walls or any other post, I care about finding what I need!
Simple search and find! - If I find what I need, I might log in.