I've ended up insulting various people with the ":o" mixup.
Example:
Person A - "I've just relased my new map, it took 1000 hours!"
Me -
Person A - "#@$(*#$@#$"
Moose - Person A, you're now banned.
The moral of the story is that people have been banned because of that little smiley.
In all seriousness, it's a good suggestion.
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