Yeah, it's highly discouraged because it brings negative attention to the suppliers, who then out of fear of liability and wanting to protect their image/company/products, they decide to stop supplying to the people who would wish to use it to leave this hellish existence. I do agree that it's best to only share via PM's and also to keep things as discreet as possible, just so people in the future would be able to buy the needed materials for their method of choice. Part of me does wish for suicide booths to become widely available (with some checks and balances to ensure legitimate use and prevent misuse), but that is something that is out of a fantasy movie at this point in our existence.