I think that we should be rewarded for all of the content that we create by allowing our links to count towards our link popularity. I have not noticed a problem with spammers at all in the forums just on the blogs, but that was taken care of.
So far I have not noticed anyone trying to spam the forums and I am pretty active on SUN. Is it an option to remove rel="no follow link for time to see if a problem with spammers developes?