You are missing the principle. I don't use the classifieds, so it isn't much of an issue to me at all. BUT, I believe that some people are improperly bumping their own sales, so more people see it. This is not allowed, unless something, like the price, has changed. But this bumping is done simply by using an alias. People may not be ripped off at all, but its against forum rules.
No way round it really is there?