Salesforce is holding a hackathon with a million total in prizes, for developers using Heroku or Force.com.
Since it can be intimidating to go to a hackathon by yourself and find a team, we've made this Meetup for you to find other GDI members who are thinking of going. They say you can come as a team, so you could pre-form a team here. Just don't pre-hack!
And hey, it doesn't matter if you win a prize - if you make a friend or make a github repo for your resume, then it's a successful hackathon.
If you're going, make sure you register on the Salesforce site. This meetup is just for GDI members to find eachother.