To fight with Wiki spams, we are looking for volunteers to be added to the "moderators" group in Confluence that gives them the ability to remove pages, comments, attachments, and so on. If you are willing to help, please drop us a note.
Those people with the moderator access can use the following Java WebStart app to simplify the spam removal task.
~/.jenkins-ci.orgfile that contains two lines "userName=YourJenkinsWikiUserId" and "password=YourJenkinsWikiPassword"
See the source code of this tool.