I'm Jeff, I created Shiftlimits (R.I.P.), Fileize (I am no longer the owner), and the current version of Hyun's Dojo. I also administrated at Fluidanims, and am currently administrating at Stickpage along with Hyun's Dojo. I'm 23 and I've been a part of the stickfigure community for 14 or 15 years now. I was never really an active member at DD but I did get an account in 2012 and posted a little bit. I've always known about DD but since I got in to sticks with Flash I never really participated.
I don't animate much any more. I'm mostly doing designing and programming, occasionally I stream gaming sessions and create videos and motion graphics for Hyun's Dojo. You can see my most recent animation here: http://www.hyunsdojo.com/dojo/1495/. If you want to creep through my older shit and can handle Fileize being a piece of garbage, you can check out http://www.filz.us/search.php?s=Jeff (anything "by Jeff" is from me).
I'm not sure how active I'll be here but I'll try to swing by and contribute to the lower sections if I can.