I don't think it's a concern at all.
People go all over the internet believing whatever they want to believe, they talk to people at work, on line at the grocery store, thru Facebook, etc. If someone cares enuf about a subject, they will do their research and not rely on something said by one anonymous person (altho, some people do ignore caveat emptor and always will).
It's extremely rare that I take a moderator post on any board with more "ooomph" just because they're a mod. and if that were the case, wouldn't it mean that I would value what you say even less because you aren't a mod? I guess I don't see a problem, but admit that titles have never meant anything to me, online or in real life. There is no implied credibility. There is instead a website role.
I think the other thing here is, where is the line drawn between opinion and endorsement? If I'm not being paid, I don't feel I'm "endorsing" (I just raved about the Magic Bullet and have zero stake in whether someone buys one or not - my opinion is that it's great and I would recommend it, but, I do not believe I endorsed it simply because I believe that's a paid arrangement but wonder what hte legal definition is???)
First, we're talking about legal liability here... it IS possible for a forum to be sued if the forum officers/owners endorse certain products and/or bad-mouth others. I'm not saying whether they would win or not, but there might be some liability... especially if it was allowed to continue over a period of time.
Here's the definition of the word endorsement:
To give approval of or support to, especially by public statement.
So, I don't want to get into a debate over what the word endorsement means vs. opinion.
What if you were a TUG member and happened to have a business entity that was a competitor of a business that continually received endorsements from TUG owners/moderators? What if a moderator provided advice to someone to rescind a specific developer contract? Could TUG be sued by Mariott, Wyndham, etc.??? I don't know... It has the potential to get ugly and it really could be easily solved with a rule keeping moderators out of that role. Also, it would be best to find the answers from an attorney. I'm just raising it as a potential issue.
Please read my statement at the end of my earlier post that states if Brian doesn't see it as a concern, then it is definitely not my concern. I am huge TUG supporter and really appreciate this group!