Jamie's e-mails came in rapidly and always with offers for more help in getting me to better use his already-fantastic product. I sometimes had trouble keeping up with him! The conversation was to the point and I felt I was being treated as a very important customer, not just some [l]user who needs to be clued in to the basics of computers by some first tier customer support who gets paid minimum wage and doesn't care about their job.
Jamie and I iterated through 6 private builds first by e-mail and then by instant messaging to explore the requirements and smash all the bugs in the implementation so that TD.Net could fully support the DeploymentItemAttribute, just like MSTest, even when the files being referenced were marked as read-only due to the nature of the source control system in use. I came out of this experience a very satisfied customer, as - even though I use the software as a student to write open-source software - I decided to put my money where my mouth is and purchased a professional license.
If you're still reading, what are you waiting for? Go buy the product and/or go provide customer service so good that your users will write blog posts about it!