Hello man279,
After upgrading to premium, if you can complete the daily checklist, you will get an increased bonus of your earnings for the day - which is 16%.
To complete the checklist you can do the following:
Click 6 Adverts
20 clicks in the ClixGrid
And either: Complete 10 tasks, or 2 offers
Or: Complete 5 tasks and 1 offer.
And you get 60 chances to win in the ClixGrid instead of 30.
Plus, if you have referrals, you can earn more comission from their clicks etc, details of this can be found if you click the "Affiliates" button at the top of the page, and select "Program Details".
Hope that helped you