This is actually meant as a replacement for TiddlyDesktop, rather than as actual server software. It's a UI frontend to running multiple copies of tiddlywiki, that simplifies and hides a lot of the complexity of using the server version of tiddlywiki. It is not actually designed to serve things over the internet, only to you local machine. As I mentioned to Handoko, I designed this as a replacement for TiddlyDesktop, based on comments from Jeremy about where he'd like to take TiddlyDesktop.
One thing this enables is the ability to create links between wikis. Because all the different wikis are started when TiddlyServer starts, a wiki available at
127.0.0.1:8080/example1 can link to a given tiddler in a completely separate wiki, available at
127.0.0.1:8080/example2. In the traditional wikifile version of this, browsers generally don't allow linking to files on the local filesystem.
Another thing this can enable is the use of TWederation between you own wikis. Because each one is running in server mode, and has it's own (locally) unique address, you can use TWederation to share tiddlers between wikis similar to how you could import them if you had an instance of a plugin library somewhere. So this gives you the ability to test bed TWederation, which could certainly be useful as we continue to explore how to use the amazing work Jed has done to get wikis able to communicate.
I hope that helps to clarify things. In retrospect, I've been so heads down on this project I forgot to explain exactly what I was trying to achieve and why.
Matt