Hey guys-
I'm wondering if anyone has a list of popular creative sizes and their relative volume for mobile. I realize that it a bit of a general request, but for Decisive for instance there is no list of supported creative sizes (that I could find). I'm looking to target less popular placements in major verticals and this would help out a ton.
I think you can only really get answers to this for a specific traffic source, since the balance of volume is going to vary a lot between sources, at least outside of 320x50, 300x250 and 728x90.
Have you checked Decisive's planner? For them at least, the info you want is there...

I did but not deep enough apparently, one click away! Haha thanks for your help man.