Yes I understand it quite clearly.
Here, I'll explain it.
Patriot 1776 (with whom I've purchased from) posts about a detector. He is also a Supporting Vendor conducting business on TN, thereby spending money with this great website for said business promotion.
He has a link for his business as permitted by the rules.
Then, another member, comes on and promotes a competitor business (Bart's, with whom I've also purchased from) on the thread started by Patriot 1776 who is spending his time trying to promote his business, that he paid TN for the rights to do.
Do you not find that rather tacky, or am I just old fashioned?
If I'm the one out of line here I owe some people an apology.