I think the forum is a good place for people to get started interacting with TP, new users don't necessarily know where to go to find information that's already available (including myself, I still consider myself a relative beginner).
Instead of replying with a specific answer to the question, maybe it would be a good idea to use the opportunity to help the user to learn how they can use what's already out there to answer the question? I see we have a Url option in the Forum also, so you could explain to the user how to check the xyz section (and include a link to it), maybe that woud be even better than an answer? If you want the user to feel warm and fuzzy, even without a personalized answer, suggest they check the link, then come back to the forum if they still have questions.
Sorry, I didn't get enough sleep last night to type in English. Recap - post the instructions (where to find the answer) and a link instead of answering the question?
Just a thought, use it as a PR opportunity?