The October 28 issue of Woody’s Office Watch has some great tips on obfuscating your email address on web pages and the like. In it, he also gives a link to a web page that lists all 256 characters in URL-encoding form.
So, what does he recommend? Well, yeah, URL-encoding your email address is one good way. Browsers will be able to figure it out but spammers probably won’t. He lists more ways, too.
Reading Woody’s email lists is probably one of the best time investments I make.