CashDuck....daily surveys, freebie offers, etc. Excellent customer service.
MyPoints...easy click emails, some good shopping cashback if you wait for their specials, new frogpond section where you can review websites for credit. Great for getting Rainforest Cafe cards.
BzzAgent...you get to test products and "buzz" to people about it...your points transfer into your MyPoints account.
MySurvey...a bit slower to add up, but easy user based surveys, not random like most gpt sites. Occassionaly get to test products for points. We got two self rise pizzas to compare last month...yummm-o! No Disney cards, but can get Rainforest Cafe or Walmart or tons of others. I usually get Walmart, then whatever $$ I would have spent there I put into my vacation fund.