e-Business Australia

What does Facebook use to let the users upload things like games, and applications to their website?

There are millions of users on Facebook at a time. Despite this, Facebook is able to update people’s news feeds with others activity in real time. With what structure of php can this be accomplished.

Sometimes I just want to go on facebook and just look at pics, without someone popping up wanting to chat with me. How can I lurk on there without my name showing up for others to see?

When I find someone on Twitter that has expertise in a micro niche, I want to Follow who THAT person is Following (and) in some cases, I want to Follow the people who are Following him or her.