If it was pitched to me that way, then I would expect a return of some kind, no matter how insignificant. I often help people I don’t know—Fluther is just one of many ways that I try—I’ve pushed countless strangers’ cars out of snowdrifts, changed a few tires for people I never met before, or will again, given gas to people who were stranded, etc. I do that with no plan or expectation of a direct return.
But if you pitch this plan to me, then I want to know what I stand to gain, if anything… after we decide that the thing you’re asking me to do is legal, ethical, simple, really only a minute, etc.