One odd site that popped recently was nanochemicals.com which is up for sale. I tried to get a peek at the statistics, but was denied and permanently banned as a result of “Too many fraudulent users from your region.”
Bids start at 60 euros, provided you are not in an arabic speaking part of the world as I am all week. In fact many of the domains that were squatted in the early days of nanotech are newly available, such as nano.co.uk nano.in, nanometre.com and nanomarkets.com.