Mike, each of the examples, in itself merits an article. Collectively they indicate a certain blindness we possess regarding the implications of the technology we use and the new set of rules governing its use. The 'it's new tech, I am sorry' excuse is beginning to wear a little thin when educators, journalists or social media 'educators' are involved. The very words 'social media' seemed to be designed to blindside us with their innocuousness. Companies forget that it's an entirely new way of marketing and consider it something which they must be naturally good at because, let's face it, it's media, ain't it? And social. So twice as easy. Individuals forget that it's an entirely new way of communicating leading to a true paradigm shift (much as this has been overused recently).
I guess we will be seeing a lot more blood on the social media floor before the lessons begin to drive themselves home.