I won 2.50 USD this morning,for the first time,I won 5 USD couple a months ago,and very often I win 0.10 or 0.25.
There is no strategy,but make sure you get up earlier and click grid before 5 or 10 USD is won. It depends how lucky you are. The only rule is to believe,click every morning and never give up,you will win 5 or 10 dollars,sooner or later.Good luck!