Google continues to spread like a virus all over. Google just announced that it is entering into the radio space (as well) by acquiring dMarc Broadcasting a the leading radio advertising platform with more than 4600 radio stations in its network. This will probably mean Adsense-like radio advertising. Price tag: $1.1 Billion. Sounds like music to my ears or should I rather say, like Google in my ears…Danny Sullivan has more on the story.