That's right Mr. Brian, there is a fine line between advertising/soliciting and a helpful answer.
Say, for example, that I just became a reseller of a software that is really beneficial to use in conjunction with Alibre. Starting a post to tell everyone about it is advertising. But, let's say someone posts a question or an issue that this same software could be the answer to, and I tell them to look it up, that may not be advertising. Then again, once I state that I own the link and sell the software, that turns the helpful reply into an advertisement. It's a big grey area that forum moderators are constantly dealing with.
I probably shouldn't leak this out because I don't know if they will ever amount to anything, but Alibre just open discussion on expanding these forums, not only in terms of the forum topics, but additional services as well. Some examples are: searchable knowledge base, B2B site (where you would fit in), and a job board.
I want to reiterate, these are just ideas that have been brought up to Alibre management. As far as I know, they are only being discussed as a possibility; there is no time line assigned to implement any of these ideas. In the meantime, you can add your voice to the discussion by opening a new thread in the general discussions forum to let them hear your ideas.