I'll cut to the chase: this will be my final article for MediaPost. The truth is, I can't believe I made it this far. Four years ago, my good friend (and great writer) Ari Rosenberg asked me to write a guest column. It was supposed to be a one-time thing, but for whatever reason, my article resonated, and our editor asked me if I would contribute monthly. I agreed, and promptly spent the next four years pissing off various industry leaders by challenging some of their insane ideas. Needless to say, it was a lot of fun.