This looks awesome - I'd love more information about how it works in a multi-user environment. For example, if 3 guys in my company do sales, how do we prevent everyone contacting the same leads?
We don't go into it much on the homepage but we think Streak really does well here. You can share a sales pipeline to specific people or to your entire domain and you can assign leads to different team members. There's a small demo of how sharing works at the end of the bug tracking demo video.
I am on Firefox on the Windoze.