Starting from
http://www.a7a10.net/forum/index.php/topic,2160.msg13815Let's look into this (I've seen my share of 4th rate new parts, like changing 30
years old rubber parts into new ones lasting 30...
days, new fuel taps leaking filling the carb and jets with pieces of cork). How important is access to good, hassle-free and reliable new parts?
Very important!
I'm sure we can find the balance between informing about good or not-so parts\suppliers without looking like trying to destroy somebody's business. The manufacturer or seller should be happy about good feedback, and factual negative feedback should make him source better quality parts, for the long term success of his business. And information about good behavior of refund\exchange\apoligies in case of problems can work for the good of the supplier. We want them in business, we need them, and they need us to buy the stuff. Any problems, contact the supplier first, do not first post here in a fit of rage

As long as the forum has no financial or personal gain in any matter, is hosted in a non-eu country far away, has very clear membership rules, will remove any offending post if proven wrong, etc etc, the risk of legal action is 0 (but as LJ very rightly mentions, should always be taken into account). Should be no problem to avoid crossing from information into defamation, and in any case the supplier would be invited to post his version.
Also, it could be an inside information board viewed by members only (no guests or google\yahoo etc).
So, before implementing any new board, more opinions welcome.