wilderness - 9:18 pm on Nov 23, 2012 (gmt 0)
A few of the sites I run do not do any business outside the US, but these look like huge chunks to add in htaccess files,
"Huge chunks" in a properly formatted htacces do not present any real issue, if there is no excessive "server load".
Useless as most IPs you see coming out of China are using IP pools or some fast flux nonsense or something equally as hard to stop so instead of playing whack-a-mole one IP at a time, which would result in a much bigger list in short time, I just blocked the country and never looked back.
In order to "fit in" all you need to do is expand the same registrar's numbers ;)