Anna's response covers the primary concerns (as I see them) for these questions, so let's weigh the options:
It looks like you are trying to protect yourselves from possible
liability in case someone comes in, takes legal advice at face value,
and then wants to sue the poster. That ... admittedly could happen,
but unfortunately a post notice won't protect you if someone's really
keen on going after you.
. . .
[T]he best we can do here is either help them out by answering or by directing them to a real lawyer, whichever happens to be most reasonable in their situation.
Anna Lear in response to Proposed Post Notice/Catch All: How do I ensure my website is operating within the law?
The worst that can come from answering legal questions: an answer to a legal question results in the asker taking the advice, getting into legal trouble, and turning around and coming after the answerer (who may have forgotten to mention that his or her answer wasn't actually legal advice) to pass the buck.
The best that can come from answering legal questions: subjective answers which do not constitute legal advice or referral to a lawyer for qualified legal advice.
Questions and answers concerning the legality of a given behavior, even though they may be of interest to webmasters, are in the same class as "please review my website" (in this case "please review my practices") and answering them with anything beyond "talk to a lawyer" will, at best, lead to a discussion and, at worst, create the potential for confusion and liability for answerers.
Questions concerning legal recourse available in a given situation and questions concerning the existence of laws and regulations would require exhaustive listings (and regular updates) and should probably be closed with advice to seek legal counsel.
Let's leave the discussion of legal issues to lawyers and dedicated discussion forums - even though a familiarity with applicable laws is necessary for those running websites, legal questions generally fail to meet the "practical, answerable" criteria if the answer is anything other than "talk to a lawyer".