Timwi (timwi(a)gmx.net) [050527 15:06]:
Instead, I think they should be blocked indefinitely,
but anyone wishing
to edit from such an IP should get a sensible message about the
open-proxy problem and NOT a screen telling them they're "blocked".
http://en.wikipedia.org/wiki/Template:Blocked_proxy is what most people use
on en:.
Editable - tweak as appropriate.
- d.