If they really want the download, like a good program. I'm sure they'll do it, survey's aren't that hard.
I used to use CPALead but i was too lazy to set up the whole thing. I tried Sharecash too but it always banned my profiles.
I use sharecash a lot, but that's only because i got denied by Fileice, but i have earned a lot with sharecash, and i think it's a good way to earn cash