In the Land of Too Many Conferences, This is a Good One It’s rare that I’m sad to leave a conference — usually I can’t leave fast enough. But such is my mood today leaving Mediapost’s third Email Insider Summit. Our industry is way over-conferenced in general. I’m guessing that our company’s full conference calendar has 40+ events on it over the course of a year. It’s more than we can afford to exhibit at, participate in, speak at, attend. We do our best, and what money we spend is much more carefully monitored and measured than it used to be, but usually it’s with that sick feeling in the pit of our collective marketing stomach that we’re throwing money…