The new follow button builds on a couple of other advances that Pinterest has made outside of its own walled garden: the Top Pins API (launched last November) and Profile and board widgets both ...

One thing that makes his stream a must-see is the effort and time the streamer puts into a variety of animated videos he activates with a button press.

Fortunately for Twitter, the GIF button has earned them some rare praise. The new feature is currently being tested on a small group of users.