I don't know where the right line is, but it's clear that Twitter has chosen theirs far left of that fuzzy middle area. In a country founded on the freedom of speech, its corollary, the freedom to listen requires no effort, you can simply choose to tune out. Engaging in Social Media should be fun, interesting, and informative, and it's clear Twitter had lost its way. I deleted Facebook years ago when the time I was spending scrolling through crap far exceeded anything of value. I don't miss Facebook at all, and I suspect Twitter will be the same.