i wonder why no one is using the recommended and dedicated mobile banner 320x50? it fits best for mobile devices
In my case the answer to that is simple, the 320x50 gives appallingly low revenue compared to 300x250. I do use it, just to keep an eye on how it does, but at the moment it's a waste of space on my sites.
And I'm not sure it is the "recommended" one. Ask a G rep, as I have done, and they all, correctly for once, recommend using the 300x250.
Is anyone else seeing better results from 320x50 compared to 300x250?