Thanks for providing the rough figures, it's quite rare to see numbers on things like support requests broken down to pricing tier but quite fascinating. Do you have any insights or intuitions as to the varying number of support requests?

Is it that the Personal plans are done by small businesses where the owner is trying to run their shop and do IT work whilst larger businesses tend to have a knowledgeable sole-purpose "tech guy"?

Edit: Ah, I hadn't seen that you've written so much about it previously. Thanks! For others, this seems like a good overview of low tier pathological customers by patio11 -- http://news.ycombinator.com/item?id=3186111

(for more see patio11's suggested hnsearch.com [patio11 pathological customers] at http://www.hnsearch.com/search#request/all&q=+patio11+pa...)