Teh Mine fell over shortly after half five when I was making a map (not uploaded yet) - I think Paint.net disagreed with minecraft's 3GB RAM usage. I put it back up straight away, so any other problems are your own :C
No probs. I've only done two so far, and they were ones that killed you when you warped to them. I'm going to wait a day or two before I go through the rest.
How do you a) go through the warp points and b) remove them?
Only I might use a few temp ones to finish my red arrows and then want to axe them off afterwards. It's taking me longer and longer to hop between them all now.
You can see all warps by doing /listwarps, so then it's just a case of warping to each one and then, if it seems useless, deleting it using /removewarp warpname (or whatever the command is).