Surveys

Ummm, so I've run out of gp on yet another account, and instead of making another one, I decided to try some surveys to get some zp.

I've been at it for around half an hour, with the BMG and superewards, and i haven't gotten a thing.

I remember before, the superewards gave alot more zp, but now its the same as the BMG. Any tips on which surveys to do, how to do them?