Re: Didn't ElReg just have a story about women-only coding camp?
The post has been deleted now, but the "/me does something" usage dates all the way back to IRC; if I typed it, and my nick was set to "JulieM", it would display on other users' screens as "JulieM does something". And I remember using IRC in the early 1990s, from a PC running a Telnet client accessing a Unix system.
IRC lost popularity in the late 1990s / early 2000s to a bunch of deliberately-incompatible, proprietary messaging applications. But Slack is actually using IRC underneath .....