> the social media of today don't seem all that much different from the internet forums of back in the day

I’m not trying to be a jerk, but did you actually participate in “Internet forums back in the day?” I couldn’t think of anything more different than contemporary social media. Internet forums in late 90’s and early 00’s were something special. Hell, I had more “internet friends” from online forums attend my wedding than I did friends from high school or college… and for some it was the first time meeting in person.