The admin of those URL shorteners has announced a week ago that in October he will make a major CPM increase. So far I see no change, but I like the spirit of rates increase on all shorteners lately !
Great news! In order to improve the quality and earnings of all our Publishers, since the month of October, we'll increase the CPM (Rates) for all countries. This will be the major increase of CPM (Rates) of the year, with high increases in several countries. Thanks for your trust.