Have You Tried Doing Surverys @ OTX?

I am quite upset with this survey site! I was linked to OTX about a year ago through my affiliation with MyPoints (which by the way is a great rewards site).

I get several requests per month from OTX to come take a survey. They promise some substantial bucks (5-50 per survey) but they never pay out!!! I think they are a scam outfit taking advantage of members time and stealing the information you provide. I have never been paid for participating in any of their surveys. Their surveys are quite lengthy and time consuming, and after filling out page after page of information and personal answers about a topic. Then OTX asks for your zip-code and then they tell you that your area is not part of their demographics! After spending 5-15 minutes filling out the survey they take all your info and run off! Sometimes they "offer" you the chance to take a different survey, but again they pull the zip-code thing and steal the info without paying you for it!!!

Anyone else tried OTX?
What do you think of them?