Example of combine AFC decline and Teahouse invite: https://en.wikipedia.org/wiki/User_talk:KnitterDIY#Your_submission_at_Articles_for_creation:_sandbox_.28October_31.29
- Adds "teahouse" as a word anywhere
- Teahouse invites (Template:Teahouse invitation)
- AFC notifications (e.g. Template:Afc decline)
- AFC Teahouse invites (e.g. Wikipedia:Teahouse/AfC Invitation)
Aaron's plan: Parse the history of all Namespace==3 and use a regex to look for instances of templates (via their comments <!-- Template:<something> -->)