I went to GigaOm's Mobilize conference to get an introduction to the Moblie ecosystem. One of the people I was able to meet was GigaOm's Stacey Higginbotham.
And, Stacey just posted a post on the top 20 Mobile Operators WW. If you want to think about the intersection of Mobile and Data Centers check out this post to see who are the biggest and will be expanding their data center capacities.
Meet the top 20 mobile operators