This letter is long overdue. I wake up every Sunday wanting to know what is on Mark Lewis’ mind. He never lets me down. This week’s essay concerns undeserved internet cruelties. It’s happened to me — even people I considered friends piled onto me once. Last week: The case for incorporating Edwards as a town and the all-but-impossible task of making it happen. Let’s go back some more. July 26: The growing frustration in Colorado with the status …