Bucking the trend of “Get big, then figure out how to monetize” these startups had solid business models from day one which weren’t mainly based on advertising.

Originally launched with the name Mollyguard, Eventbrite is an online event registration service that [...]

Idea: Create a social network for people who are new to big cities. For example you could create a site for New York with resources for people new to the city interested in local hangouts,reviews,apartments and other listings. It’s other primary use would be for people who were interested in meeting other recent transplants and like minded folks in person.