I posted in the thread on the rewards board, but wanted to post here too. For those of you not getting in (you won't get a response), don't give up. You just don't meet their demographic requirements at this time. Next time a banner comes up, try again. I got in on my 2nd try a couple years ago.
For those that got in - be sure to do the household surveys. Even though you don't get paid for those, there's a reason they're sending it - they have a REAL survey that they need to see if you're who they're looking for. I almost always get a real survey within a day or two of doing a household survey.
For those wondering about frequency of surveys - depends. I go through spells where I get a couple a month, then there are spells where I'm getting at least one a week. Depends on how many clients they have at any one time and whether you fit the demographics for that product.