Thanks, No.

Do you get forwarded mails from people you are very close to and therefore are afraid of hurting them by telling them that you do not like getting forwarded mails or chain mails and even if they want to send you something like that, they should put your email address in BCC instead of TO/CC? At least I am.

Here's a solution to your problem: You can send a gentle reply to them containing the link to the website: Thanks, No. Nice, gentle and works!

Say good-bye to forwards!