My thougt on this is when I m selling from my business, strops, sets, etc.... I make mention in the Vendors section. A few times a year when I thin out personal razors I use B/S/T as these are not related to my business and would be the same as any member here offering goods. If you are elling your own stuff, I think B/S/T is fine. If buying a dozen Wapis to rescale them maybe the Vendor section.
Post in the regular forums are more of an issue. If asked a question about my products I will freely answer about what we make, how to use it, details, etc..... I will not quote prices, provide links or solicit a sale there though. I would have no issue with any vendor doing the same....providing info to an asked question and without soliciting a sale.
I will draw the line though on the ones where someone say "where can I buy a starter set, strops, razors, etc..... If someone says "hey, go visit Tony" that great. I will not jump in and say "I sell those check out my website" but some vendors will. At that point, full time of part time one becomes a vendor, not a helpful hobbyist. This is not my full time business either, I have a day job and my business is simply a sideline but I choose to operate the same as Classic or Vintage, etc.....
Mike, you seem to always follow the rules and set a good example, no worries.
Tony