Tiddlyspot launched in 2006 as a free, quick, easy service for creating and using TiddlyWiki online. It kept running until late 2020 when some technical difficulties brought it down.
In 2021 Tiddlyspot was replaced by a new, improved TiddlyWiki hosting service called Tiddlyhost. Tiddlyhost is completely new service that addresses many of the shortcomings of Tiddlyspot, and also provides a compatible replacement for existing Tiddlyspot sites, so they can be viewed and even updated they way they used to.
For more information see the FAQ, the About page and the Blog.
Ps, thank you Tiddlyspot users for your patience and for the messages of support and encouragement for both Tiddlyspot and its successor, Tiddlyhost.