i get nothing but spam

I route all of my evolt.org e-mail through gmail. That includes all of lists activity as a normal subscriber and as an administrator. I must be doing something wrong because over half of my gmail inbox is spam. In fact, it's so bad, that I tag and filter all legitimate e-mail to skip the inbox. It always amuses me when I see gmail's spam filtering being exalted. Like I said, I must be doing something wrong. :)