The killer feature is that nontechnical Mac and Windows users can click a link emailed from anyone on their team who is already using the app, and get seamless group chat across platforms, without calling the IT department to set up a server and/or open firewall ports, or committing someone on the team to managing anything XMPP-related. It just works.
Even Linux folks can participate with additional work (e.g. dozens of packages to install if you're running Ubuntu 64, since Adobe AIR is 32-bit only; annoying).
That said, I agree that the barrier to entry is pretty low.
Even Linux folks can participate with additional work (e.g. dozens of packages to install if you're running Ubuntu 64, since Adobe AIR is 32-bit only; annoying).
That said, I agree that the barrier to entry is pretty low.