And yet another thing to distract from work*. 5 years ago, I could quite easily say "this is a no email/phone day", put the phone on do not disturb and only check my emails at 5pm.
Nowadays, if people don't get an immediate reply to their email, they IM, and my browser beeps and pops up the message, regardless of what workspace I am on. Worst of all is flowdock, which I'm now mandated to be on several flows, most of which are irrelevant but still cause browser notifications to pop up - "@everyone ready for the call?" - not a call I'm on, but thanks for disrupting my thought processes to remind people about a meeting in their calendars.
Then, 3 minutes later, the same message arrives in your inbox and then your phone. Gaaaaaaaa!
* He says, posting on the register....