There are several ways to try to reduce or even avoid SPAM, if you want.
(I need help with URL's and more info, please, GPWA members.)
www.Mailwasher.net - lets you see all your mail before downloading it to your email program, so you can bounce garbage & viruses BEFORE they get on your computer.
SpamArrest - an online service that you sign up for (not sure of cost) that *only* allows email thru that you've authorized. No harvesters can get thru this program.
SpamCop - report repeated abuse here.