I think the free stuff often gets overlooked when it comes to reviews. It's really good that someone's using, developing and playing it. (I must give USR a closer look, I love compact rulesets - I'm sure I rated it, but sometimes forget, I download, skim, save - Stuart Lloyd was recommending I think as well :) )
Random thought - I bet if you charged 75c for it and mailed the code to reviewers, it would get a lot of attention on DriveThru. *grin* Also have you thought about creating one of those mini-fold up pocket rules PDF, like Weird West?