I'm 11 for 12 after tonight's survey. I missed one last week because Greenfield was down for maintenance and I was never able to access the site. I've had surveys that last five minutes (one on Walmart) and some that go on and on for 20-30 minutes. I've learned that if any survey comes up from the Phoenix group I can count on it lasting at least 25 minutes!
If I don't qualify (which happens a lot), I try my DH's info or my oldest DD. Usually one of them will qualify for a survey. I then turn the computer over to them to complete it.