Michael at 2blowhards.com writes about cell phones. I agree with his point that cell phones are inferior to land lines when it comes to sound quality.
Even when I have all of my antenna bars, the cell phone will for no reason drop parts of a conversation. And when there’s only one or two antenna bars, then the quality really sucks.
In addition to the quality problem, the cell phone is just too small to comfortably talk on.
(Hat tip: Marginal Revolution.)