Well when you have people selling stuff like Gov Rocket, a list of 10 or so websites with .gov somewhere in the domain name, that host comment sections, (with the intent that buyers will spam the comments section to get backlinks), it's no wonder that some .govs are filled with spam.

Heck, over 1250 people bought Gov Rocket...

I should check the sites mentioned in the "review copy" I have, and go see how much comment and trackback spam are on those sites...