I want to suggest a plugin idea for more "hardcore" SMP servers — random teleportation among a huge territory, not only 33x33 spawn pool. For example, if you die, you'll be teleported over a 1000x1000 zone. That make people value their ingame lives..
yeah, then make a bunch of 1x1 towers in that area with lava below them. they'll think twice next time before dying.
I like that idea, I'll have a look at it tomorrow (if nobody is faster). I'd also propose the option to randomise not only the location, but also the altitude. This would allow players to spawn in caves on rare occasions (if there is a cave, of course).
Well, even for my survival project it's too cruel to be spawned in a cave without any tools and torches.. 8))