Extension:Campaigns

When a user follows a URL to account creation with  in it, Extension:Campaigns stores the campaign identifier in a session cookie. If and when the user successfully creates an account, the campaign is logged (see Schema:ServerSideAccountCreation).

See Engineering subpage for some background.

Opting out
If a user checks "Exclude me from feature experiments" in Special:Preferences, then the extension does not log or set a cookie.

Configuration parameters
none