A while ago I found http://www.cdt.org/speech/spam/030319spamreport
I don't know whether the robot designers have read this or done anything about it but I've used a JavaScript tool to create hot e-mail addresses on a site I maintain and only the webmaster (guessable!) address has been spammed so far.

i know of one person who inserts not in his addy for this very reason you just have to write the addy without the not

I notice that you've got hotlinks for all of the principle contacts at the LDWA. This is a great convenience to users, but you may find the this will lead to great increase in Spam email to the addresses listed as "SpamBots" trawl Websites looking for such addresses to harvest and sell on to Spam Email lists... Just a thought.