We're working on http://mixpanel.com http://mixpanel.com right now. It's centered around tracking user behavior & interactions, which makes it a great complemen

We're working on http://mixpanel.com http://mixpanel.com right now. It's centered around tracking user behavior & interactions, which makes it a great complement to GA. Signups are open. Feel free to email me at tim@mixpanel.com if you are interested & have questions.