I wrote before on the new trend in using so-called ephemeral media. I stated that the live moment aspect mixed with a private feel drives the use. In an article on the real driver for the success of Slack some good points are mentioned. Continuous stream in combination with appealing to FOMOT (fear of missing out the team).
Interesting aspect Satya mentioned in the article is the ephemeral part: the messages in the stream are not stored endless, after 10k messages they disappear unless you pay. In bigger and active teams this could happen after a day. So just like the other popular services you need to keep track to be part of the team. And team pressure is huge.
I myself recognise this a lot. I’m part of 8 Slack groups. Some of them are easy to follow, others are very active and hard to keep up when loose the pace. It is all or nothing.
As this principle will get common we will see a this ephemeral more and more as design material in services. The tinderisation of the ephemeral as recipe for success…