1.) I update Low-Tier Jane once a week, twice if able.
2.) Every morning, I got a tradition. I spend a half-hour abouts to quickly check my webcomics on both here on Tapastic and the ones I read on other sites. I also do things like check Tumblr and Memebase here as well. Then I pick a youtube video that's updated, like Muselk or Alpharad to watch and eat breakfast with. Then actual work.
So, basically every day.
3.) I've never used Twitch myself, or really watched anybody on it, not my style, but I can get the appeal. I'd try it myself, but I don't think my computer could handle the strain of art programs, internet w/music, and twitch streaming. It's buggy enough already!