For a while, I wanted to give kudos to the guys at Obsidian Portal. While the site began as a simple wiki for listing your game site, anyone who has created a website for a game knows the head-ache of not only providing content, but making sure the site is functional.
While the site is not as robust as some of the Content Management Systems out there, it provides an easy way for gamers to create a campaign site that all the players can reference. There are various sections for game-log, characters, items, and a forum for the particular campaign. You search other member's campaigns (If they made them public) to help our with content if you're strapped for time. The even have dynamic character sheets for D&D and Shadowrun; They willing to make more if there is enough interest.
The team at Obsidian Portal have won an ENnie award for best website two years running. The site impressed me enough to become an Ascendant Member; that's a fancy way of saying I paid for the service. You do not have to become an Ascendant Member to use the site, although it benefits the GM to do so.
You can read more about them on their site:
If you interested in my last campaign, you can find more information here:
The Rise of Scytha