Supporting vendors pay for the considerable bandwidth charges incurred by the Forum in exchange for the right to use the Forum to market and promote their goods and/or services.
Their payments mean that the Forum is free to the rest of us.
Forum members are allowed to post For Sale threads to sell their own SKY or parts their have bought for use on their own SKY, but they must not use the Forum to promote sales/services beyond that.
Please also reference the rules regarding "For Sale"
The Forum does not prohibit occasional and casual mention of non-supporting vendors. But those mentions cannot be so specific that they include addresses, phone numbers, sales contact names, e-mail addresses, URLs or links. And if the "casual" references become frequent, they will be considered as marketing and promotion.
You cannot, for instance, make a post telling other Forum members to buy their new SKY from dealer XYZ when XYZ is a non-supporting dealer.
If, however, you post a thread about a new SKY you have purchased and the thrust of the post is about the SKY, it would not be inappropriate to mention in the post that you were pleased by your dealings with XYZ dealer.
Members that are not supporting vendors
but post contact information for commercial sale (for example, dealers that post the dealership name, number, e-mail, etc.) in a starting thread, a specific post, or their signature are subject to having their information deleted. Persistant or multiple posting of contact information will result in said member being banned from posting.
Additionally, if you are not a supporting vendor/dealer, you may NOT use your screenname (member ID) as a way of advertising. Please see section on member names. If you become a supporting vendor/dealer, you will be allowed to change your member ID/screenname at that time.
(usually best through Private Message), for information on how to become a supporting vendor.