|If you've seen a genuine article being vandalised, don't edit the change out unless it's minor or you have new information to add. Instead, edit a previous, non-vandalised version from the history or roll the article back to that edit - this way, information doesn't have to be constantly republished.|
For cases of major vandalism or new articles being created with spam content, please post on User_talk:TeamCodex with the offending article so it can be brought to a Moderator's attention, if you cannot deal with it yourself.
You can export the text and editing history of a particular page or set of pages wrapped in some XML. This can be imported into another wiki using MediaWiki via the import page.
To export pages, enter the titles in the text box below, one title per line, and select whether you want the current revision as well as all old revisions, with the page history lines, or the current revision with the info about the last edit.