Great list! I’d add “Dust-ups are not the product of new media, but have always been with us.” No matter what your field, you can probably find examples of heated debates being played out in book reviews, journal articles, or conference presentations themselves – but those debates happen in slow motion as serial monologues. New media publishing speeds up such communication, and makes them more public, participatory, and conversational. These traits both increase intensity & make the conflicts blow-over more quickly, especially if involved parties can come to the digital table & publicly converse following the rest of your rules. I see this as a net gain, but obviously not everyone does.