Well, I am making the same decision on my mac, as I am ordering my powerbook tomorrow. Prior to purchasing my first ibook Jan 2004, I had no bluetooth electronics whatsoever. I went ahead and purchased the optional bluetooth, and before I knew it, I had a bluetooth mouse and keyboard and a new bluetooth cell phone. The addition of an internal factory installed bluetooth module is $50, how much ram is 50 gonna get you? 512mb of additional ram is already $100, so when you think about it saving 50 on the bluetooth and putting it on the ram really isnt gonna help all that much. You would be surprised how much more convenient it is to have bluetooth. The way technology is going now, the cost of bluetooth cells, pda's, mice, keyboards and soon printers will be cheap, and I would rather have it and not need it, then need it and not have it. besides who wants a usb bluetooth module sticking out the side of you nice pretty ibook?