GET-Evidence

Approaches to minimize spam:

• Max new openids per IP address per day
• Max edits per day per openid
• Max edits per day by "new users"
• Notify admins and stop accepting any new edits when certain rate limits are reached ("under attack")
• Put new OpenIDs in quarantine until a "known good" user has seen their edits
• Mark quarantined edits/content

Approaches to make it easier to clean up spam:

• Revert page to earlier version
• Mark edit as spam (automatically revert the edit if it's the latest one; otherwise force flagging user to revert it, or do a "git rebase"-like process)
• Mark OpenID as spam (mark/flag all edits by that OpenID; revert automatically if possible; otherwise flag the edited content so other readers know it's spam)
• Show all edits by given OpenID
• Show all edits by quarantined OpenIDs

More things to consider:

• Compromised "known good" OpenID