I've been thinking about the fan issue for a while. I have a Thinkpad X200 tablet and the fan is barely audible, even when it's on high. The Thinkpad fan blades reflect some of the innovations in design found in nature:
ThinkPad Silent Owl Blade
I wish OQO could refine or improve the fan so that it's much quieter. I have a model 02 and I really like it, but the fan can get disruptive if you're in a quiet room.
While you still have the chance to improve the fan on the model 02+ (since we're still several months away from May), please improve the fan! Thanks.