Your country: US
Reward types: Sweepstakes for cash only
Number of invites: regularly due to sofware use plus occasional surveys
Age to join: from 18 years
Prize draws: Monthly $ 10,000 cash for 10 winners, stay active on the panel
Comments: This is a Nielsen special panel (world's major market research institute). You need to install software, which permanently tracks what Web-sites you visit - online surveys may be conducted on internet usage accordingly.

Your country: US
Reward types: gift cards and cash via prepaid card from VISA
Per survey: 1 to 3 US$
Cash out: from 25 US$ (25,000 points)
Number of invites: about 15 surveys in a month
Age to join: from 13 years
Comments: Prepaid card from VISA are sent by post, but you can also request a virtual gift card

Your country: US
Reward types: Sweepstakes (to win cash & valuable prizes) only
Number of invites: about 7 surveys in a month
Age to join: from 13 years
Prize draws: Every month 16,500 US$ total in the US and many valuable gifts, also 1,000 US$ prize draws for new members

Your country: US
Reward types: Gift vouchers and sweepstakes
Incentives per survey: 10 to 100 points (up to 1 US$, more loyalty points possible)
Cash out: from 500 points (5 US$)
Number of invites: about 8 surveys in a month
Age to join: from 18 years
Prize draws: New membership prize draw for 5,000 US$ and annual car prize draw (e.g. Ford Fusion) and monthly 5,000 US$ cash draw and quarterly to win 2,500 points each
Comments: Loyalty program from 5 participations in surveys, in addition extra points for frequent partaking

Your country: US
Reward types: Cash and gift vouchers
Incentives per survey: 1 to 5 US$
Cash out: from 10 US$
Number of invites: about 15 surveys in a month
Age to join: from 14 years
Comments: A reward of 5 US$ will be given after registration and participation in a short survey

Your country: US, Canada, UK, Australia, Singapore, Hong Kong, Ireland, New Zealand, South Africa, India and 35 more countries
Reward types: Cash
Incentives per survey: 0.50 to 4 US$
Cash out: from 10 US$
Number of invites: about 30 surveys in a month
Age to join: from 16 years
Comments: Access to our own survey online panel to participate daily in paid surveys, as well as a huge range of other earning opportunities: tasks, micro jobs, apps, discover offers and more