Snapchat gives Facebook a taste of its own medicine by stealing new feature from Instagram

The relationship between Facebook and Snapchat has historically been pretty one-sided. Snapchat comes up with new features, those features become super popular, and then Facebook steals them while pretending that it had the idea all along. That all changes this week, with Snapchat launching a pair of new features -- and one of them is most certainly an attempt at replicating the experience you typically get with Instagram videos. One of the two new features is called the Magic Eraser, and it's p...