Send feedback, request a card, suggest a tool, or report a data correction. Every message is read.
Tell us what is missing, wrong, or could be better. Every message is read, and corrections go into a queue that is worked through every week. Accuracy is the whole point of this site, so a wrong figure is treated as a bug rather than a complaint.
Every article has a feedback widget at the bottom with five quick reactions and a correction form. For a problem with a specific article, use that instead — it is faster and attaches the article context automatically.
Use this page for everything else. An email address is optional and is only ever used to reply to you, never for marketing.
No. It is optional, and it is only used to reply to your message. We do not add it to any list.
Reported corrections go into a queue worked through weekly. A wrong figure is treated as a bug, so clear-cut errors are usually fixed sooner.
Yes — card requests are one of the message types, and they are a common reason a card gets added.