Plugin

[gutterfucker (BANNED)]

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?

I'd love if it were something like that, but after 20 seconds, a player loses 20hp a second.
Frankly, no one should be in a jail like ski's for over 20 seconds as it is, so strict measures should be taken from that point. This should only apply to certain maps, however.
The jails of dust2, ski, and any other map where escape is always easily possible should have the removal of health as suggested above, but display the message you and B1 suggested on maps like griver and bano where players often stay involuntarily in jail.