It's just such a good idea. DMs are a persnickety lot, picking and choosing from the entire history of fantasy, sci-fi, and, uh, history. No DM just runs a campaign the way it's "supposed" to be run, and all the exceptions, additions, house-rules, hand-waves and addendum could never be anticipated or tracked by anyone.But I never knew a DM who couldn't use a little help staying organized.
Which is where the very clever folks over at Obsidian Portal have staked their turf. Over at the "OP" (as those of us in the know like to call it (actually, I just made that up)), you can sign up, create your own campaign site, and BOOM -- you've got a site complete with adventure log, forums, a place to keep maps and all that good stuff. It's seriously really cool.
Looks like a great place to run a PbP campaign, but even for face-to-face games this is gonna be really useful. I mean, basically it's just a wiki with a few bells and whistles, but the bells are well-thought-out and the whistles carefully placed.
And, by the way, they also support DINO-PIRATES OF NINJA ISLAND as a game system.