I was pretty excited to come across this. I figured with this being through Google, it would be legit, yea? Sure it is, if you're already *buying* things in the playstore on a *very* regular basis anyways. I didn't expect large payments for very brief surveys, by any means; but I also didn't expect a "use it or lose it" situation that lasts only a week, maybe 2 if I'm being generous. Other marketing research may not pay well either, but at least it accumulates over time.