Either that or voting on all sites each day increases the amount of points you get each day. Lets say for example its 10 points you get each day for voting on all sites and then you have a multiplier. The multiplier starts off at 1.0 and then for example it increases by x0.10 so you would get 11 points if you voted on all sites. It would reset every month so lets say if you were to vote for 30 days in a month the multiplier would be x3.0 and then it would reset to x1.0 the next month.