These offers also run through rightmedia on yahoo, and its one of the reasons I could never use their network. The problem was that there were networks running several banners promoting these mobile offers that would say you have new messages, or check your inbox etc and it would blend into my site perfectly. The CTR was well over 2 or 3% and my total daily pageviews would decline by 3 or 4%. It would hurt my site in a big way when those offers got through.
As a side note, Yahoo told me a few weeks ago that all dating sites were banned from advertising on yahoo and the only way dating sites could now advertise was by buying traffic via right media no more direct sales. Is this true or is it just restricted to free dating sites?