Mobile advertisement: Apple and Android at the same level in the USA

From the Italin blog Mobileblog: A research of the mobile advertising firm MillenialMedia (that has monitored the click on the optimized banner for the mobile) says that Android has reached Apple at the top of the ranking of the OS managing the largest part of the advertisement market.

Apple percentage drops from 56% to 37%, same percentage of Android. Thrid place for RIM with the Blackberry platform. Very far the rest of the operating system (around the 2%)