1. It doesn't slow down the vandals one bit - they
routinely create a
username, upload the image then make their edit putting it in place.
The image will keep reappearing as long as the technical facility exists.
I am absolutely zero when it comes to technical topics, but I can hardly
imagine that it be impossible for servers to exclude single computers -
regardless of the User Name apllied. Moreover, still most vandals do not
create user names - at least not at first - and once their anonymous
"account" in numbers has been blocked, they can't enter Wikipedia from their
own machine anyway. Third, I can tell you most vandals are deviant
adolescents, and if they notice vandalism is removed very fastly more than
once (and don't notice their great deeds are discussed somewhere), they will
most likely stop, because they get bored. "Professional" vandals are
relatively rare. I think persistent participators in edit wars are more
serious a problem than vandals.
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