That bit of wisdom from Gawker’s Nick Denton at yesterday’s blogging session at Ad-Tech New York. Update: oops. Actually, ’twas Jason McCabe Calacanis of Weblogs, Inc. who said that. In other words, if you are a “good” company that values – and practices – transparency, then go ahead and blog. TiVo, JetBlue are good examples. If you’re not, well keep your mouth shut… cuz you’ll get lots of negative comments and trackbacks.