There are a few spelling and grammatical issues.<p>"in a fun, and harmless way": comma isn't needed. "There # Number: You probably want "their" (ditto for 'There Email') and "# Number" is redundant. Use either the pound sign or the word. You also probably mean "phone number."<p>How are you making sure your service won't be abused?
Let's think about the what's going to make ppl pay up more. How about some public humiliation?<p>eg. If Twitter user A owes money, tweet at all A's followers telling them about it ... "@AFollower Did you know @A owes @B $20?"<p><a href="http://www.spanishvida.com/2010/02/22/in-spain-debt-collectors-use-public-shaming-to-extract-payment/" rel="nofollow">http://www.spanishvida.com/2010/02/22/in-spain-debt-collecto...</a> is the story I heard that sparked this idea BTW.<p>Not that I'm saying this is a good idea and you should do it, I think you'll be shut down so quickly, I'm just pointing out ...
Haha nice! I built something similar for Twilio + FreshBooks called "Wheres My Money Man?" using clips from Family Guy: <a href="http://www.songcupid.com/wheresmymoney/" rel="nofollow">http://www.songcupid.com/wheresmymoney/</a><p>It barely works but whatever.
Cool app. You could integrate with the WePay API so that the person owed money could actually collect easily online.<p><a href="https://stage.wepay.com/developer" rel="nofollow">https://stage.wepay.com/developer</a>
I wonder how the variety of collections and consumer protection laws apply here (I know there's technically no "consumer", but I'll bet that harassment to pay up falls in there somehow…)