I was a bit surprised when I checked out their hosting situation. Only in one DC (suburban chicago) and up until about a year ago they were only using one network provider. Now they're on three, apparently they had some real pain points before being multi-homed. I'm guessing the year's timing isn't accidental.

Still not bad numbers considering. Running multiple DC's can be quite a pain in the ass and a money drain, and maybe that's one of the advantages of having really loyal customers. A good example of there being many viable paths to a goal.