“Every program attempts to expand until it can read mail. Those programs which cannot so expand are replaced by ones which can.” —Zawinski‘s Law
I shared something with a good friend of mine at Evernote, which made us observe that this makes the Evernote platform yet another Inbox for us to check for messages daily. We got the observation a little further and one could say that:
Every software as a service platform expands until it can support messaging among its users.
Instant or not so instant does not matter that much. But it seems to me that those who do not, do get replaced by competitors who support it.
Managing organized complexity 