This August, various social justice organizations that you know and love—or don’t know but would probably love if you did—are going to be meeting up in Los Angeles for an event called Fourth Estate Leadership Summit. Basically, it’ll be a network of students, groups, leaders and causes for what they’re calling a “Common Good Exchange,” which sounds like the best possible kind of exchange. Invisible Children will be hosting the event, and it’s going to be featuring some other great people: charity:water, TOMS Shoes, TWLOHA, The Giving Keys and dozens of other great organizations will be showing up. And, yes, we’ll be making an appearance ourselves and, frankly, we can’t wait. If you want to go, just head over the site and apply. Applications are due May 15, so you’ve got plenty of time weigh the pros and cons—particularly since there are so few cons …