This is an interesting idea - especially the API aspect of it. Have you considered partnering with some well known players to help launch the service?<p>Especially given the negative experiences people have with Groupon I think some social proof to show people the positive experience would be useful.<p>I'm not sold on the name either - 72hdeals? Are all deals 72hours long? I'm not sure I get it.<p>Good design.<p>Overall I think this could be a very exciting idea and potentially disruptive!
The HN crowd mostly interested in promoting their web applications should probably check this out: <a href="http://72hdeals.com/developers" rel="nofollow">http://72hdeals.com/developers</a><p>Your feedback is highly appreciated!