A new startup launching today called Crowdtilt is taking a page out of Kickstarter’s book, riffing on “crowdfunding,” but instead choosing to call itself “groupfunding” or a “Kickstarter for groups of friends.”

What does that mean? Well, we all love Kickstarter, but if you’re looking to pool money to throw your friend a birthday party, for example, that ain’t going to happen on Kickstarter. For a good reason, but that doesn’t mean the crowdfunding model can’t work. Thus, Crowdtilt has built a site that makes it simple for groups of friends to organize things to do together, with the specific focus on making it easy for the organizer to collect money from anyone.

How does that work? The site allows you to easily create a campaign, like “Help Hagan get to San Francisco” or “Phish Party Bus in DC,” while specifying how much money is needed for the campaign to actually happen — or in the startup’s lingo — “tilt.” You can then send this campaign out to your friends, who can authorize their credit cards for a certain amount with Crowdtilt.

Like groupbuying, friends’ credit cards won’t be charged until the campaign has tilted, or in other words, the specified amount has been reached. Not dissimilar from Kickstarter in this way, especially as projects have a certain amount of time before they become defunct.

Crowdtilt has turned out to be a huge help even among the YC class itself. The current batch has used crowdtilt successfully to even buy a communal pickup truck!