Does Anyone Else Do Surveys?

Does anyone else do surveys online for points or cash? For the last few months I have signed up with a few survey companies with mixed results. Some of them I get invitations on a daily basis and qualify for most surveys. The surveys are not too long and you earn points that can be converted into cash or gift cards. These are Ipsos by I-say and Global Opinion Panels. Some of them I get surveys all the time but I NEVER qualify for them. It is really frustrating because I spend about five minutes on the preliminary questions and then don't qualify for the surveys. A good example of this is Survey Savvy. I am using these surveys as a way to earn some extra cash for the next few months. Coming up I have my brother's fiance's birthday, my mom's birthday, my brother's birthday, my husband's birthday, my sister's birthday, my mother-in-law's birthday, Christmas, my father-in-law's birthday, and my nephew's birthday...all between now and February. Does anyone have any suggestions of survey sites that actually pay off? I really enjoy taking the surveys as long as I qualify for them.