For the most part I try to ignore Twitter and its problems don't bother me, but one area that I can't avoid, that is a direct problem because of its centralized

For the most part I try to ignore Twitter and its problems don't bother me, but one area that I can't avoid, that is a direct problem because of its centralized proprietary nature, is that now some people now provide a twitter handle in lieu of a plain old email address. Some people on twitter are even openly hostile to email because it isn't public.