The main problem for me are the many spammers that make pointless comments everywhere just to get their post-count up. Don't think that will improve much. It's not only Newbies that spam.
Report those that you feel are spamming to the necessary authorities on the website, whether that be the moderator of that particular board, the advertisement owner (if they are advertising), or even have a word with the user directly.
That's the beauty of the community, we can all help out.
One thing is for sure though, the community should judge all users equally and not simply scrutinise those who have paid advertisement signatures. The spam artists are those that blatantly take the piss, whether that is manifested in bot form, or consistently chatting absolute garbage.