DMing someone for the first time on Tumblr is such a vast different experience from doing the same on Pfio. On the former, it feels like knocking into a stranger’s home, transgressive, wrong. Over on Pfio, DMs are a tool for communication, a method to share information directed at one person. Like sending mail to a friend or acquaintance.
I used the DM feature on both sites about a day apart and I was surprised the at the my emotional reaction between sites.