Re: Pesha/anon
It doesn't have to be a blank check. I wouldn't ask you to just agree to something sight-unseen, that goes against pretty much all my self-preservation instincts and I wouldn't ask that of someone else. More like if there's something I might need help with in the future, I'd just ask you to think about it.
If it helps any, the kinds of favors I tend to ask involve people driving me places, since I don't have a license.