I think that we have to be careful not to turn off new users by being too blunt with them. I have been using PCLOS for 11 months now and one of things that I have liked is the friendliness of this forum (at least 95% + of the time). The times that I have posted a question I have always received polite and helpful replies. In those cases I had already done a forum search and had not found any appropriate solutions. However, I have enough computer / software background to know that searching first is the proper thing to do.
It may be beneficial to guide new users toward the proper way of using this forum. There probably aren't many of us left who actually read manuals when we get something new, be it a TV, cellphone, software package, or anything else. Why do we expect new linux users to naturally read and follow our forum rules?
Wouldn't it be better to cajole them into proper behavior? Instead of directly answering their question or telling them that they need to do a forum search, instead tell them (politely) that you think there is an answer in the forum and give them instructions on how they should perform the search. If this continues to be the response that they receive for questions that have been answered many times, and it is given in a friendly and helpful manner, hopefully it is a behavior that they begin to adopt.