I think it's ok if you want to or not. As long as you have great navigation. I actually surf opening most things in new windows because I'm slightly ADD. I like to go back and forth between pages. That's just me. I would say.. don't disable right click though. I hate that! I don't want to 'save pictures'. I want to use my 'open in new window' if the mood hits me.
Members areas that do that piss me off.