I've had to start blocking IPs from the site, because I've had a few malicious bots visit. Here's the list of the ones I've blocked (note, to get on, they had to exhibit particularly malicious behavior, like spamming me, or requesting documents without waiting, or spidering the site without accessing the robots.txt file):
202.95.23.183
202.95.23.182
202.95.23.181
202.95.23.180
206.20.221.226
212.19.66.204

If you happen to be blocked in the future, it is because you look like a bot or I made a mistake. If it happens, I apologize. Just email me & I'll fix it.

Also 211.218.242.253 is a mail gathering bot (banned, of course!)