A funny thing happened in the fourt quarter of 2011. Analyst firm Canalys announced that Apple shipped more PCs than Hewlett-Packard (HP), but that was only true if you were willing to count iPad devices as PCs. And if you were willing do that, the question, then, is where do you draw the line? Are smartphones and superphones PCs as well? What about hybrid eReaders? Judging by the reader comments, the consensus among Maximum PC readers is that tablets are not PCs and shouldn't be counted as such, but regardless of whether or not you agree with that statement, HP is once again the world's leading client PC vendor.