Check the nonprofit pulse...

Potentially awesome Twitter-based mashup is here. Created by Eduardo Bejar @edobejar, it tracks what non-profit twitterers are talking about and what links they are sharing.

Here's from the "what is this?" page:

What is this?
This is a mashup that tracks messages shared at Twitter ("tweets") by people working or related to the nonprofit area, worldwide.
Why was it created?
It was created to provide an instant glimpse of what is being discussed, shared or mentioned on Twitter, today by these users.

People are so creative, I love it.