To celebrate its 20th anniversary, the Internet Archive has created a special treat for its visitors: an utterly enormous number of GIFs culled from the original social network, GeoCities. Fittingly, the new collection is dubbed the Geocities Animated Gif Search Engine or GifCities for short. It features a whopping 4,500,000 animated GIFs from the classic internet era of the mid '90s. Even though Yahoo shut down the service in 2009, each of these GIFs links back to its originating page via the Wayback Machine -- just as with the National Archive's collection.