My wife plays World of WarCraft, a lot. One thing I noticed– thousands of people are posting screenshots of their game play, guilds, wardrobes, heck- everything online. They’re always looking for server space, free hosting or something. They’re moblogging the virtual worlds.
How about a Flickr uplaod button -in game-. See something cool? Hit the button, add the tags, designate it to your guild, upload. I suspect this would mean tens of thousands of accounts for a service like Flickr, but on a more macro level, people are going to start moblogging their virtual worlds just as much as the real world, why not use Flickr