From Visiongain’s report on Mobile Advertising “From 2005 when the nascent market garnered $255 million in Europe and the United States, mobile marketing and advertising in these two geographical areas will grow to exceed $1 billion in 2009, provided certain elements fall into place.” I think everyone is underestimating mobile marketing and the potential for revenues. I agree, key elements need to be in place, but the likely revenue generation will be higher. The real issue will be who has the most useful profile information, can you still put personalized ads without any user profile information? and who has the the most effective data mining tools.