My name is Alex Schröder. I run this site.
Using a wiki for your campaign may or may not be for you, depending on your style.
This site allows you to give it a try. Create your own wiki, and start with a list of links: Player characters, other characters, locations, shops. Then start maintaining a journal and keep linking to what you already have, or when the party discovers new stuff, create appropriate pages and add some background information. That’s how you grow your site, page by page. If you want to see how other people do it, check out some of the larger sites linked from the Status page.
If you have any questions get in touch with me. 
If you’re interested in how this site works, take a look at the Setup page.
This is something I always want to see (and rarely do) whenever I see something offered “for free” on the Internet. So how is this site going to work?