A hint if ya want it...
Take surveys at 11pm CST, and again after Midnight if your still up....
Avoid the ones that offer, 115 credits, 108, the 86 credit offers from "Yoursurveys" or whatever it is, and another site I can't remember the name of(I'll post it when I do)....they don't even give you 5 credits and screen you out 99% of the time anyway...
I usually try to get screened out with the "MyOpinion" and "WiseSample" surveys immediately because that is usually what happens anyway, might as well save 10 minutes...
Take the 126, 105, etc etc....
just get to the survey by saying whatever you have to, then go for the 5 credits with truthful answers, that way your not wasting time...
There are quite a few other tricks you can figure out....nobody from the states should ever whine about the surveys, the folks from around the world don't get anywhere near the opportunities we do...
I max out everyday except Saturday doing this while catching up on the news or watching a game repeat....