I've just started using TiddlyWiki (been using it for about a week) and it is great.If you just need it for organizing your own data and don't expect to need anyone else to edit it, there is always Tiddly Wiki. It is a wiki in a file. You don't even need the internet to edit it. Just a web browser and access to the file.
So - my questions: for those of you who use wikis, what service do you use to host? What sorts of organization of your data has turned out to be useful?
Do you use them mostly for yourself, or more as a tool to collaborate with your players?
I have been thinking of using a wiki for my campaign setting for some time, but I don't even know where to begin.
Breadcrumb Navigation allows you to set one page as the "parent page" of another. This is especially nifty when you are describing locations of a setting. For instance, for the Urbis Wiki I wrote up the Gentlemen Callers' Club, which is located in the District of Duriam of the City of Dartmouth in the Region of the Flannish Cities, and so forth. By setting parent pages, I can get the following navigation bar at the top of the page:
Rothea[url=http://urbis.wikidot.com » [url=http://urbis.wikidot.com/known-lands]Known Lands[url=http://urbis.wikidot.com » [url=http://urbis.wikidot.com/flannish-cities]Flannish Cities[url=http://urbis.wikidot.com » [url=http://urbis.wikidot.com/dartmouth]Dartmouth[url=http://urbis.wikidot.com » [url=http://urbis.wikidot.com/city-of-dartmouth]City of Dartmouth[url=http://urbis.wikidot.com » [url=http://urbis.wikidot.com/duriam]Duriam[url=http://urbis.wikidot.com » Gentlemen Callers' Club[/b]
I have one wiki for organizing my own campaigns, another wiki which the players use to submit their characters and where I add some relevant information for them. But most of the wikis are for the general gaming audience.
Me, too.
Thus, I am bookmarking this thread.![]()
[[Dartmouth]]]
Mysterious phenomena have occurred in [[[Dartmouth | that city]]]...
I think you'll likely find that the only players interested in editing the wiki or adding content are erstwhile DMs. In our group, only myself and the current DM have ever run games and he and I (not surprisingly) are the only ones providing content for the wiki.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.