Cato... it's a little confusing.
If someone posts something like, "Hey, check out the new resin 1956 Flashmobile at www.xxxxxxxxx.com," that's more of a "heads-up," not direct selling.
If someone posts something like "Here is my latest resin body of a 1956 Flashmobile, they go for $25 and you can buy it by emailing me at resinguy.com, I accept Paypal, Visa or MC"... that's selling, and that's not allowed here.
I guess the determining factor is, if someone posts all the information needed to buy the item, that would be considered selling. If someone posts a link, or where to go for further information, that would be ok. At least, that's how I understand the "no selling" rule.