re: Why you shouldn't open .csv files in Excel

A user typed CNA, which is a big insurance company, and it was automatically changed to Can - someone decided that they know better than the user what the user intends to type, and that someone was wrong. Also there was some time when I was figuring out why my automated process that was opening and parsing xls files was hanging. When I started that hanging process myself, and when that process opened and xls file, I got a pop up window advertising something related to MS, like Live Search or something - someone decided that that advertisement was more important than our work. Folks got rather annoyed and never even tried the stuff which was advertised so aggressively.