Unpredictable. Unfocused. Just like life.

The Social Graph is everywhere today. Ok, Wikipedia calls it the social network.

You and I might call it "contacts" or "friends" but I guess you don't get millions of dollars of funding if you keep it that simple.

Now it is a little more complicated than that. There are relationships between these people and you, and perhaps between each other.

It's also wrong to suggest that you have a single social graph. I think that you actually have multiple social graphs, in the same way that you might have a different set of contacts in your email address book (probably including work contacts) than you do in Facebook (who are probably actual friends).

There are even different levels of friends - people I've met, people I drink with, people I volunteer with, people I grew up with, etcetera. How do you classify the level of "friendness"?

This thing just feels like it is going to spread like wildfire. Hey, if you classify people based your past interactions, would they be "content generated users"?