1. A cross-language system for facilitating question answering comprising: a server which hosts a plurality of community question answering websites, one for each of a plurality of countries, a first of the websites using a first language and a second of the websites using a second language, each of the websites configured for generating a graphical user interface to be displayed on a terminal of a user accessing the website; a machine translation system which translates a question submitted by the user to the first website in the first language into the second language; and the cross-language system being configured for: alerting the user to a similar question to the submitted question which has been posted on the second website by a past user in the second language, wherein the similar question is determined using a computed similarity measure; and posting the translated question on the second website and notifying the user of answers to the translated question that are posted on the second website by other users.