I have not personally tried this one, but it looks like a decent site. Good payout, referral bonuses, and twice a month payment. Here’s some info directly from their website:
- Receive $3 to $75 for every paid survey and offers completed.
- Receive coupons, discounts, gifts, rewards and giveaways, targeted to your specific needs based on how you answer our survey.
- Review products and services and choose to keep the products you review.
- Refer your friends and family and earn 10% of their paid survey earnings for life!
- Get paid on the 1st and 16th every month though Paypal.
If anyone has anymore info on Panda Research please post it in the comments.