Page "Pseudonymity" Paragraph 3

The continuum of unlinkability can also be seen, in part, on Wikipedia.

Some registered users make no attempt to disguise their real identities ( for example, by placing their real name on their user page ).

The pseudonym of unregistered users is their IP address, which can, in many cases, easily be linked to them.

Other registered users prefer to remain anonymous, and do not disclose identifying information.

However, Wikipedia's server logs may enable system administrators to determine the IP address, and perhaps the true name, of a registered user ( see for a list of the conditions under which such a linkage would be attempted ).

It is possible, in theory, to create an unlinkable Wikipedia pseudonym by using an Open proxy, a Web server that disguises the user's IP address.

However, most open proxy addresses are blocked indefinitely due to the their frequent use by vandals ( see ).

Additionally, Wikipedia's public record of a user's interest areas, writing style, and argumentative positions may still establish an identifiable pattern.