[Rob]

I've got to say, this is one of the best features that Facebook has ever implemented. For those of you unfamiliar with it, it's essentially a sidebar block that displays friends who are likely to know you - meaning that they are friends of several people who are already on your friends list.

Since I started actively using this feature, I've doubled my friends list (approaching 500), primarily by tracking down old cl***mates who hadn't joined my school's alumnai group.

This is the kind of intelligent design that we need to see more of. Although Facebook often recommends friends I don't know, it also often serves up friends who I don't know, but should. More than once I've met a person offline whose name I've seen on Facebook's "Friends You May Know" block.

What other sites have functionality like this?

[twitterfollower]

I know thats too old. But thanks for sharing it. I'm new here. Basically I use twitter and facebook. I use orkut too but its quite old now you know