This was one of the earliest places on the Internet that really encouraged users to create their own webpages and to contribute to the Internet. If you recall, back in the early days of the Internet and web, it was all pull. You read pages that were already online. It was like an online Argos catalogue, and yet think about your current interaction with the web – it’s all about contribution.
When GeoCities came along, it was suddenly possible to create personal homepages without too much technical expertise. It changed everything, and millions participated.
But, like many other sites, it was surpassed and now the social networks are themselves offering what Geocities used to in a simple way.
I hope the Internet Archive Foundation is storing enough of these sites and pages for the researchers of the future…