Credit:
The execution is perfect: the awful background, the annoyingly blinking text, the barely readable blue links and the horrible HTML. This is what 90% of sites hosted on GeoCities looked like (and there were a lot of them, believe us), and yes, it's all imprinted forever in the collective memory of Internet users from 1995 - 1999.
Kudos to XKCD for the effort, and if you're wondering what all the fuss is about, GeoCities closes down today, with all its data being erased. Nice knowing you, we'll never forget you, unfortunately.