Search the public stream in Facebook

Is there any change i can search for anything in the Open Stream in Facebook?

Let´s say that i want to look for "obama", this will return all of the obama mentions for a bunch of people in their streams, so far I haven't found anything like this, probably only looking in one user stream, but not the whole stuff.

So, i haven't found a way to do this, but how come, sites like socialmenti开发者_JAVA百科on.com can do it? Do they query user by user streams? and how to do it without users permissions?

What do you guys think?

Thanks in advance!

Camilo

Just found the solution, you can find it here:

http://developers.facebook.com/docs/api#search

Thanks for the help!

Camilo