When you participate in most surveys, you earn Lightspeed Points. Once you earn at least 500 Points, you can redeem them for gift certificates or a prize.
You can redeem them for cash only when you earn at least 1,000 Points. With the amount of surveys there are it is not a problem to reach 1000 points.
Every time you participate in a mini-poll, Quick Match, or survey, you'll earn another entry into the $5,000 Lightspeed Sweepstakes.
You can win a daily entry to the raffle just by login on. "No Problem" payments. I already received a few.