Use this if you only want to include your e-mail address in your website and don't want to be worried about it being harvested by spambots.
Now your email address should be safe from SpamBots (computer programs that crawl the net looking for email addresses). Most SpamBots look for the give-away 'mailto:firstname.lastname@example.org' link, and more complicated ones look for '@' symbols. With this script in your page, there's not a single 'mailto' or '@'. As far as the bots are concerned, it's just a bunch of meaningless numbers. This should help keep your email address off of future bulk email lists.