Every so often I look at Apple's laptops, such as the just-announced ultra-thin MacBook Air and think "hmm, those are nice, maybe I should get one of those sometime."

Then I notice (again) that there's only one "mouse" button. I use three all the time (in Linux the middle button is a quick Paste of whatever's highlighted, and also opens links in a new tab). I could even get by with two buttons. But not one. And adding an external mouse kind of misses the point of ultra-portability.

Maybe someday there'll at least be a way to retrofit another button or two in there. Until then, sadly, no Macbook for me.