The Boulder Pledge is a personal promise, first coined by film critic Roger Ebert in 1996 not to purchase anything offered through email spam. The pledge is worded by Ebert as follows:
“Under no circumstances will I ever purchase anything offered to me as the result of an unsolicited e-mail message. Nor will I forward chain letters, petitions, mass mailings, or virus warnings to large numbers of others. This is my contribution to the survival of the online community."