I used to get ton's of spam on my page. the fix was to use a web based email page (contact page) that uses CGI script to send the email to another email location. Rather then saying here is my email... spam me... THe cgi script is the only program that knows where the emial is being sent to a specific address. This cut spam by 99%. only the importent email get through. The nice part is that I can at any time change my email address without notifying everyone, the email just simply get redirected to the new email address in the script, kills spam and no filters needed and the email still gets directed to me. Take a look at my web page and the contact page, if you want the script i'll be more then happy to give it to you.
Fred.