Plugin

[Byte]

If the plugin is private then i'd have to make it myself.
Seems easy enough, make a grid for coords of jail for each map.
Then if someone stays there long enough -> do something.

We could slay them, make them slowly start losing hp, beacon them, glow them etc.
Remember somemaps you can't escape on your own (easily) so there is that.
Best way to handle this may just be a chat feature that helps admins find jail campers.

So like B1 said, print out in chat:
Player Spensor has been in jail for over 20 seconds.

Opinions?