Beware of business IT horrors In this issue, my colleague Chad Dickerson unveils his "Top 20 IT Mistakes" based on some unhappy lessons he and others have learned. This list is so much fun that I couldn't resist adding my own: five common mistakes that business people make when dealing with IT. Each of these derives from bitter experience. And in three of the cases, I was personally responsible for the bad judgment (please don't ask which three!).