Fun fact: I found love on Neocities. I met someone who kinda turned out to be my soul mate. For this, I owe Neocities everything.
Myspace, the vitality that once thrived within Livejournal, Fanfiction.net and Neopets, forums and message boards, Yahoo! Games, MSN Groups, the poetry community that thrived on Xanga and Tumblr, roleplay communities everywhere, the ability to customize your profile, instant messenger font & color choices, and all of the various communities (tight-knit or otherwise) that modern social media has vanquished.