[MJM]

Basic Rules:
1. No paying hacks allowed. If you want to make money, you are not welcome to advertise your products at vB.org site, in links, any way or shape of promotion schemes.

When I started my recreational arts and crafts site, I stipulated - no ads or links of any way shape or form.

Over time a number of working artisans had provided very helpful info and how-to instructions, so, at my discretion, I added links to valued members websites in their profile and signatures.

The #1 cardinal rule is NEVER DISCUSS PRICE OR BUSINESS TRANSACTIONS AT THE SITE.

This has been abided by flawlessly for 5 years - till today!
A new member joins and asks how to make something.
In my reply, I linked to a posting by a valued member who had provided a pictorial construction tutorial.

This new member goes to his site, checks his prices, then has the audacity to reply to his thread in the nastiest tone ... $XXX!!! - USERNAME FROM XYZ.COM IS A RIP-OFF! etc etc etc.
Fortunately I was able to immediately delete this post, ban this user, and email this valued member and apologize.

Lesson learned is that you can never have a completely foolproof interactive community, because a jerk is born every minute, and one day one will find your site.
I firmly believe that a site that is valued for quality and integrity must be cultivated 24/7 - with weeding hoe always in hand.