Thanks Jeff! I just wanted to point out that I am not actually the lead developer on Gravity Forms, I am part of the team but all the programming credit needs to go to Alex Cancado who is a brilliant programmer.

As for a demo... we are working on putting together a demo site that will enable users to try out the plugin and see how it works by logging in to a demo site.

I haven't seen any lengthy reviews come out yet, but Joost de Valk did a quick blog post about the plugin here:

http://yoast.com/gravity-forms/

Joost is paying us a big compliment by using Gravity Forms on his own site and his development projects despite the fact he has his own plugin that also does contact forms. I don't think another plugin developer could pay us a bigger compliment than that and we truly appreciate it.