Thomas Dalton wrote:
I disagree. Vandalising is easier than cleaning up vandalism,
This is a false assumption.
Major vandalism is as simple as writing a vandalbot in pywikipedia, which, if you know python, is a 5 minute job. Fixing that vandalism requires reverting each of those edits, which may be spread between multiple accounts.
Ah, but fortunately we have anti-vandal-bots, too, automating much of that work. If necessary we could run a lot more of them, tuned to catch a lot more vandalism, but it's not a big enough deal (yet, anyway).
-mark