
Comment to someone you haven't ever interacted with before or introduce yourself to someone you've interacted with and friend/follow them. Afterwards, leave a comment in this post with the equivalent of "I did it!"
I went through the self-recs from Day 3 and left some comments hither and thither on fics, graphics, and at least 1 craft. (There were a lot, which is wonderful. I'm so pleased to see so many people putting what they're proud of out there!)