I think this is an excellent way to acquire paying customers AND will give many potential users the option to see if they can build a decent subscribership without having to front the $250 or more that would be needed for ListBuilder.
I just wanted to let you know how much I have enjoyed and continue to appreciate your company. It has been a blessing for saving hours upon hours of personally dealing with e-mails and has turned out to be more affordable than I thought.
Thanks for the time you spent with me on the telephone about your site...I think you have a potentially great success story here.