Replying to two related comments at once. =]
Rich Holton wrote:
How about requiring users from known anonymizers to
login? This still allows for legitimate uses of the
anonymizers, but helps to restrict vandals.
This is already how it works: if a user is IP-banned, he or she can
still log in by creating an account.
cprompt wrote:
At the absolute least, people using an anonymous proxy
should get a
read-only version of the Wikipedia with a notice saying that they're
missing the full functionality through using their proxy. Perhaps they
could also edit talk pages, although those can also be abused.
This is already how it works for all banned users: there's no facility,
as far as I know, for banning people from *reading* Wikipedia, only one
to ban them from *editing* it. So all our banned users can still make
use of the content.
-Mark