Firstly, a big thanks for Rich for volunteering to contribute documentation!

As a user (not developer) I think the documentation could do with lots of love. I think 'site recipes' or 'recommended configurations/approaches for a given use case' would be really helpful. For examples I was wondering about this earlier on (still am actually): http://www.ubercart.org/forum/support/1358/ubercart_paypal_help, and specific/detailed documentation would really help.