Spam PMs suck. On other forums I look forward to receiving PMs and when I get an email saying I have one only to find out it was a Spammer it ruins my day haha. I am a mod over there so I just infract the person and give them a warning
Obviously Just forwarding SPAM pm's to any online mod here using below given url is best option to fight against them. http://forums.digitalpoint.com/showgroups.php DON.
I simply ignore them and forward the PM to the online mod. And after that i delete that PM from my inbox. - Digital -