Now admittedly this sounds like a silly question;
But, I actually have a need for this. I use tiddlywiki alot, and it'd be really, really cool if I could save changes to a tiddlywiki in some mobile browser.
But it seems that with all the mobile browsers that I've tried, changes I make to my tiddlywiki cannot be saved to an SD Card;
However it seems that although some mobile browsers are quite capable of loading and saving changes that are hosted on a webserver (I've actually tried this on my blog on Tiddlyspot.com with opera-mini and successfully saved the changes.)
Now, if I could just host a webserver that runs on my Windows Mobile device, and that webserver could be capable of running a simple dynamic page generation language and some-how writing and reading from a txt file or database of some sort, I could access/modifiy my tiddlywiki's without having to pay to host them somewhere (even if I have to write the backend myself it'd be worth it!)