I got an exclusive early look at favorites, Instagram's new approach to integrating public and private forms of sharing:
Instagram is betting it can make its take on the friends list more successful by simplifying it. Unlike Facebook, you’ll have a single list to manage. Unlike Twitter, the list is private. And unlike any I’ve seen, Instagram’s list has visual flair. The green “favorites” badge is a small thing, but it signals your affection to the friends of yours who see it, in a way that I suspect will build a sense of intimacy. Seeing a favorites post nestled in among all the other posts in your feed feels like a bonus.