Meanwhile, Edmodo has (according to their website) almost six million users in four years. I haven't used it, but it appears to offer the same texting features

Meanwhile, Edmodo has (according to their website) almost six million users in four years. I haven't used it, but it appears to offer the same texting features as remind101 and lot more - while being inexplicably free. (Can someone explain how they plan to be sustainable?) http://www.edmodo.com/ http://www.edmodo.com/