My favourite website that still has the 90s aesthetic and more-or-less survives is hyperreal.org, website about rave culture

http://hyperreal.org

most of the links even still work. Listen to all these DJ sets! (in a horrible Real Audio codec)

http://djsets.hyperreal.org

See how to be a DJ in 1993!

http://music.hyperreal.org/dj/so_you_want.txt

See some random pictures from 1997!

http://hyperreal.org/raves/de/

I am not at all a rave person, yet somehow seeing this website seems so... comfy