Flattered you’ve A2A’d me, Habib. You’ve A2A’d some good people.
I program; I don’t program well or often, and I mostly program in antiquated languages (I maintained C code from 1985 for a decade, and Perl is my default language), but I program, sometimes even for my day job—my CTO has forced me to pick up Ruby and Golang. Miguel Paraz has been bemused that I don’t post about that, and gratified that I’ve started to (very little). I’m slowly getting back into NLP, and I may end up using the resources here for that.
The techo Quora is rather different to the humanities Quora, btw. The style’s more wooden. 
School sector IT policy, and educational IT standards. By a strange set of happenstances, they’re my day job, and I’ve actually gotten reasonably knowledgeable about them over the past five or six years. It’s fairly niche stuff, so I haven’t had much excuse to talk about them here—although I’ve managed to talk shop with Scott Welch about them.
Artificial languages, including Esperanto, Lojban, and Klingon. They’ve taken up a huge chunk of my youth, and my online fame; and speakers of all three are on here. But they haven’t generated the traffic for me to get into them often.
I do talk a whole lot about topics I am not knowledgeable about, to compensate. I know how to use Wikipedia constructively…