I suspect the frequency of surveys being offered is based on how many surveys they get commissioned to work on and I'd be amazed if they didn't have rules on how many surveys you can take over a certain period. I've been a member for several years and, believe me, there are far more opportunities nowadays than any other time I've been a member. In the past I've gone a full week without a single opportunity. The "Find A Survey" button is also relatively new. There was also a long time when clicking on old survey links brought nothing if you'd taken that one linked opportunity. You could only start finding additional surveys when they introduced surveymyopinion links. Before everything came from e-rewards.com and every link was one survey only. These are the good times!!!