Personally I would love to see a chat section or IMM, but if a new person asks a 'redundant' question and is made to feel unwelcome for it, it would serve no purpose.
Being sent to search the archives isn't feasable for most people with todays busy lifestyles. To be greeted with such a response only turns people away before you even know if they have something to contribute. Having more than one chat/IMM forum may be better where new people can ask questions and hopefully receive valuable info, as well as the 'experienced' chat/IMM.
If someone finds a question to 'redundant' don't respond, but don't make a newbie feel unwelcome for not knowing what you may have been asked a year previous!