"Finding Our Digital Identities: A History of Social Media" by Jay Hoffmann https://thehistoryoftheweb.com/finding-our-digital-identities-a-history-of-social-media/
Interesting stuff. I wasn't aware of AsianAve or BlackPlanet. I never had a MySpace, but I remember how it seemed to spring up out of nowhere among my high-school friends. It's weird how so many of these things seem obvious in retrospect, even if at the time nobody knew how big "social media" would become.