wiki wiki wiki wiki wiki wiki HELP!

Hi folks,

I know there are some Wiki fanciers out there, so I'd like to pick your brains.

I want to redo my personal and academic web sites, but I don't want to have to code HTML from scratch everywhere. What I'd rather do is hack a Wiki, or maybe some non-LJ blog system, which has the huge advantage that I can do it from anywhere without having to worry very much about things like ssh access to the web server. And so on.

So, what do you recommend? What I'd like is something that does most (ideally all) of the following:

1. Provide a non-editable URL that looks like a normal web page and can be displayed in one frame of a frame set.
2. Hackable styles. CSS would be good, but something specific to the platform is OK too
3. Support for in-line LaTeX markup
4. RSS support would be nice (export, not that bothered about importing feeds)
5. Must run on reasonably vanilla linux/apache (I don't want a lot of admin faff, and I may need to move it from server to server a few times in the near future)

I'm kind-of thinking I might want something wiki-like *and* something else bloglike.

Suggestions, please?