This and the Messenger unbundling are two of the most exciting things coming from Facebook that almost no one is talking about. Facebook is really getting smart about being a 'platform', and taking these off the main newsfeed is a clear strategy.
Additionally, Facebook's tiny change, the 'Sell' button on groups has the potential to be really huge. If people are moving away from the web and into apps, building it into the apps like Line and WeChat have done is a smart move.
