So i just signed up for e-rewards and received my first survey offer on Saturday for $6.50. Not bad, I thought. Tried accessing the survey and received a note saying that the sponsor was having problems with the survey and to try again later. Tried later that night, same story. Twice in Sunday, twice on Monday, same thing. Today, the survey closed.
I've been doing ok with Valued Opinions (have redeemed 4 $20 Amazon e-certs in the past year - not bad since I buy all my b-school books at Amazon). Pinecone opps have been pretty scarce lately. I used to get a lot of surveys from vividence/keystone (nice since they gave $10 Amazon certs for each survey), but those have also been VERY few and far between in the past year or so.