There are more than 100 countries using Google Apps in 40 languages, which has lead to 2 million companies and 20 million individuals adopting the Apps for their workplace.
It is not only small companies that "Go Google", recently companies such as Konica Minolta, Rentokil Initial and TOTO that have just decided to go Google. (There are more, watch the video below) These companies no longer have to deal with the hassles of managing email servers or rolling out software updates, and their employees now enjoy the convenience of shared documents and calendars, Gmail and more.
I guess it is something that really can help you, small business do not have to go through these hassles either.
More importanly, the marketing types could learn from the marketing campaign the Google is running and every link above hints at how they run it. A simple blog post could be a seed of much larger marketing campaign.
Official Google Blog: "Going Google" with millions of businesses around the world Sphere: Related Content