Well, frankly, I think a year's ban is as good as a perm-ban -- it'd take a particularly obsessed type to even remember to go back after a year and start trouble again. That said, there is some shock value in a perma-ban when, as you note, a temp-ban just doesn't work.
-- Bob
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Then the horns kicked in...
...and my shoes began to squeak.
-- Bob
---------
Then the horns kicked in...
...and my shoes began to squeak.