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OTRS means we're dealing with those cases where the person is aware and kicking up a stink - we need to take action everywhere, but especially where attention isn't already being called to it - those complaining to OTRS are already better off than those not doing so.  The metric of ""multiple vandalism"" is very sensible, it is a measure of where someone has enough badwill in the world at large to attract problematic edits in the first place.  Your metric of ""vandalism not reverted in X seconds"" is also sensible, since it shows where problematic edits are likely to persist.  Both ""where likely to be created"" and ""where likely to persist"" are sensible points to focus on - I'm not sure how you can argue otherwise. D 

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