[quote=@Mokley]A tab for "World Information" or "Worldbuilding" or just "World" or "Info" -- currently a lot of us use the "Characters" tab or the first post of the OOC to keep lengthy worldbuild info where everyone can see it, but a handy dandy tab of its own would open up the possibility of organizing world information by posts and links.[/quote]

All of your suggestions are good, but the above is usually handled by the first (few) posts in the OOC tab, not the Characters tab, in my experience. It's where everyone who looks to join the RP starts and many GMs take advantage of this by putting the whole application process, along with any relevant information about the setting or the world, in that post. Having a separate tab for this wouldn't be useless but I doubt most people need one.