What is it with Taiwan and spam?

Today I had an IP coming from Chunghwa Telecom (the largest ISP in Taiwan) that just ripped through pages on my site so fast that my site nearly crawled to a halt! After blocking the offending IP, the spammers came right back with another IP from the same ISP! Punks!

This isn't the first time this has happened either. Over the course of the last couple years I've firewalled many single IPs, most of which come from Taiwan. Only now, I'm just going to start blocking entire ISPs.

Currently, I'm blocking the following four IP blocks from ever touching my web site.

202.129.242.0/24
61.229.87.0/24
61.228.0.0/14
218.166.0.0/15

Taipei Times has an article talking about a new anti-spam bill. I hope it works, because I'm ready to block the whole island.