I do take commissions myself, and unlike everyone else, I take requests and trades!
Regardless of what it is, I will be a bit slow on it, even though I will do the work. I mean, someone on DA just paid me for a 3-page comic. I long ago took his money, and I still have yet to do it. It is understandable, however, that there are other things I must do, personally and drawing-wise.
As far as trades, go... I do ask, but I do have a poor track record of, as some put it, taking NO for an answer. And depending on whom you believe, I've been asking people one too many times. Regardless of that, even though I am slow on them, I always do my half.
I guess that's all about crappy old me...