That follow-up tweet freaks me out. What does that have to do with anything, really. I think it's rather unprofessional and would prefer people not make self-congratulatory statements about their personal beliefs.
I think it started in "black twitter". People would post jokes and it one of them took off they'd post a link to their SoundCloud page asking people to check out their "mixtape". Others started joking that they don't have a SoundCloud, but check out my book/art/Ruby package/craft beer.