Getting a bunch of people coordinated is seriously one of the toughest things to do. Sure, you could use Google Docs, a massive email thread or some kind of travel website to keep track of what's going on, but does that every really work? No.
However, what you can rely on is that everyone's probably got a cell phone on hand, and GroupMe works on a variety of mobile platforms to help unify you and your crew and keep you all on the same page. GroupMe enables you to create a group, keep track of these folks, communicate with them via social networking and SMS, and even share photos. In addition, you can also have a group call to keep in touch with one another the old-fashioned way--via an actual group chat. Follow along to find out how to use this application to better organize your life--and your posse.