From the FAQ :
Quote:What is the Daily Checklist Bonus?
The Daily Checklist not only helps you keep track of your daily ClixSense activity it also rewards you for being an active ClixSense member.
For each day that you complete your Daily Checklist a bonus will be added to your account balance at the end of that day. Premium members will earn a 12% bonus of their personal earnings, while Standard members will earn a 5% bonus. The bonus amount you can earn is unlimited; it only depends on your activity.
Check this announcement : ClixSense Tasks Success and New Bonuses | ClixSense Forum
jasm78 wrote: $5 Bonus
To commemorate the success of the CrowdFlower Tasks on ClixSense, we are introducing a special $5 Bonus that is instantly credited to your account's balance each time you complete $50 in tasks.
That means each time you earn $50 working in the tasks you get a $5 bonus. When you reach $100 you will be earning a total of $10 in bonuses, reach $150 and you will be earning $15, and so on...