The ebay rules are there for a reason. Let me explain some of the reasons.
We (the OOF Admin Team) run this site, at a cost (financially and in time dedicated to it), in order to provide/share knowledge of our cars, allowing us to run them for sensible money. That is are primary purpose - our reason for existing.
The fact that we have created a community is a useful bonus, and (mostly

) worth the cost (again financially and in time) of running those community sections. Each and every post consumes server resources, which are finite. Even small <1k posts still use disk space, use memory, cpu and disk i/o resources for processing initially and again during display or searches, and again use disk i/o, cpu, memory resources and tape space during backups.
You will notice that
www.omegaowners.com generates no income on its own, and we do not have any advertising banners etc on the site. We do not want to have any ads/tracking banners on the site either. Part of the site (the images server) is paid for by the OOF shop. The main OOF server is paid for by the Admin Team (and it has been migrated to new servers 3 times since OOF started).
Therefore, we have to be a bit selective as to what we can and cannot provide.
What we cannot provide is a free advertising site for people's auctions. We provide a section for established members to sell Omega related bits to members.
Additionally, every post getting spammed by somebody wanting to sell an item gets tiresome to read, and annoying breaks the thread up, which I feel the general OOF membership does not want.
Lastly, there are technical issues around search engines, particularly Google, which I don't want to go in to too much detail.
I'm not convinced people need mollycoddling in this way
I think said members have more than enough ability to search Ebay, without having to be mollycoddled by someone providing links directly to their auction

The rules are wrong
No, with our current setup, and looking at a fuller picture than your view, I assure you the rules are right in this instance

Thank you for your understanding in this matter.