For those who frequent Twitch and are looking for a 1) Linux-based streaming, and 2) small community, i.e. less assholes on the chat, check out ShadowSigyn. Calm, positive, rantless, small-time streaming, with fellow neckbeards. She's not going to give you any deep Linux-foo, though claims to run Debian Jessie so there's that, but the casual convo often revolves around distros, DE's etc. She's usually on evenings London time zone, Tue/Thu and on occasion Saturdays.
More on /r/linux_gaming.