I agree with Will's idea of a brief disclaimer at the top of the page, but I also think that a full disclaimer button should placed under the the brief. Also I think there should be a "proclaimer" such as, a statement on how to use the forum as a poster and reader, what to expect, the nature of construction design and specific problem solving and specification vs. the format of vague or non specific questions and equally vague, general and nongraphical answers.