This comes up about once a year. I know that it seems like a silly rule, but the rules are all we have to keep things sane here.
If we allow these rules to be broken all the time, the forum would clog up and fall apart.
Here is a scenario that may make the rule easier to understand:
Registered user Joe Smith has a power hammer he wants to sell. He doesn't have a membership that allows him to put it in The Exchange, and he isn't allowed to sell it in Shop Talk, so he puts it on Craig's list. He then puts a thread up in Shop Talk ( and on every knife forum that he can find) about the "GREAT DEAL ON A POWER HAMMER" he spotted on Craig's list.
That example aside, it is not about the dealers who have paid for the right to sell, it is about the rules against any sort of selling and buying in any forum except The Exchange. The heading for Shop Talk says it is for "The art of knife making - advice on methods, supplies, and materials" The advice does not cover buying and selling, however.
If we allowed every person to post a new thread about a deal they spotted in the trader paper, ebay, or some other selling/auction site, it would clog Shop Talk up so bad that there would be no knife making discussion. Think about why you came here.....Was it for the deals you could find, or the great advice you could get?
We bend the rule a bit when someone posts an informational thread about a product they bought, or have developed. If anyone wants to buy or sell one, they are advised to take that discussion to PM or email.
We also allow the threads about the great hauls our members find in Craig's list and yard sales. We want the members here to be a big family and share their joys and sorrows, but please don't put up any threads or posts that specifically refer to buying or selling.
If someone posts a thread that asks about where to buy a power hammer, others can reply about the makers and dealers they have had or heard good things about...that is a discussion.
A fellow forumite may even send the poster an email or PM and point the person to someone they know , or a listing, that has one. Just don't do it on the forum.
Unless it is blatant SPAM, the mods just edit the post, and in some cases send a note to the poster. No one is penalized for these actions unless it is a repeated pattern.
Final comment:
Do you want a hardness tester, power hammer, belt grinder, etc....and are looking for a deal? Why not do a weekly search on Craig's list, ebay, and check The Exchange. Isn't a little effort on your part worth saving a few bucks and finding what you want.