I am adding the below text to the FAQ today:
BallOfSpray is in the business of selling advertising. Companies who wish to promote products and services in this forum must be advertisers or at least consult BallOfSpray before doing so. For more information about advertising please click here.
This does NOT apply to 99.999% of you. Please feel free to talk all you want about products or services of non-advertisers and advertisers. This only applies to persons who are trying to sell products or services in the forum. Selling your personal boat or gear is fine.