It's not really one website per se, but finding someone's old website that they'd built up over the years in the '90s with all sorts of interesting, detailed, yet approachable content. Sometimes academics, sometimes just people with interesting hobbies. There's a certain je ne sais quoi about them that most blogs these days just don't have, and I could get lost in some of those sites. Every so often I still find one, and every so often I find a site of more recent provenance but with the same quality, but overall they're a rare breed.

One of the most recent such sites I've found is actually someone's Angelfire site, rather than their own domain: http://www.angelfire.com/extreme4/kiddofspeed/cherlinks.html . I went down the rabbit hole of her Chernobyl content way too late at night one day in February. All sorts of interesting content based first-hand experience.

The other thing I miss is desktop-focused instant messaging that focuses on the text experience. I had so many great text conversations on AIM, and GChat when it was new, sometimes over the course of hours. Just this week I had my first AIM conversation in at least a couple years, and it still had the same magic. Probably the closest thing to it we have today is Slack, but the ubiquity of all your friends having AIM (or at least Yahoo! Messenger or MSN) just isn't there.