I always use full sentences, proper spelling, and proper grammar in every format (except when purposefully breaking the rules). Takes me forever to write a text sometimes.



No, I don't usually notice it when someone is talking. Verbal language is not my strong suit.



I take note, but I don't wince. I've likely become desensitized.



From a few people, but not many. My friends list may be more literate than most.



I don't use or read Twitter, so I never think about 140-character limits.



Everyone everywhere, not just Facebook.



Not to my face.



I think they were eroded long before. The internet and cell phones have only contributed to the sense that it's normal.



I laugh in the face of character limits. They are more challenge than rule.



Two that I noticed, technically. In #8, it should be Have at the start of the question. In #9, there should be a dash between "140" and "character". Otherwise you could be talking about 140 shortcuts for characters.

You used "anybody" and equivalents instead of "anyone". "Anybody" is still perfectly correct, so it's not by any means an error, but "anyone" is preferred. However, that's not the sort of thing most people, myself included, ever think about.