Showrapp.co won the last Seattle Startup weekend by having an actual app running by the end of the event, complete with user accounts. They used https://DailyC

Showrapp.co won the last Seattle Startup weekend by having an actual app running by the end of the event, complete with user accounts. They used https://DailyCred.com https://DailyCred.com (my startup) for the account system. There's a big difference between collecting a potential user's email address for your mailing list, and actually creating a real user account for them.