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.
Ezine Director is one of the best and cost effective list managers in the market - I have used quite a few.
Just wanted to drop you a quick note and say thanks for pointing me to your excellent service. I'm pleased with the results and am relieved that everything worked so well. One less thing to worry about!