The pillars of social media site success
via Seth's Blog by Seth Godin on 3/24/09

Why people choose to visit online social sites:

* Who likes me?
* Is everything okay?
* How can I become more popular?
* What's new?
* I'm bored, let's make some noise

None of these are new, but in the digital world, they're still magnetic.

If you want to understand why Twitter is so hot, look at those five attributes. They deliver all five, instantly.