RiotVine is a great location to search for events happening in your city. Currently RiotVine supports Boston, Los Angeles, and New York.

With the ability to search for events based on both date and location we see RiotVine providing a very useful tool to a currently unserved niche.

What it does in their own words:
RiotVine makes it easy to discover cool events around town.

How it beats the competition:
We allow you to share events with your friends in a single click.

Site: http://riotvine.com