In a previous post here at DMEC, Matt talked about Yahoo moving ahead of others in mobile advertising. I remembered some data on web site access from Smart phones. Shown below is the graph with data sourced from M:Metrics. What is a Smart Phone is not well defined and the number of phones that can be qualified Smart Phones is not clear. The data shows Google at the top, with almost twice that of the second place player, Yahoo. With so much lead in website usage, it is conceivable that Google won’t yield its lead in mobile advertising to others. Another caveat is, this data from M:Metrics is at least six months old.