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.
Thanks, that was very useful. Just made my first three reports. But does it help? I always thought nobody ever checks those reports anyway, so I never bothered. The whole forum
seems completely unmoderated - this is very especially evident when going to the speculation section.
I also don't really like that my eMail address is shown to the moderator that reads the report. Don't get why that is needed.
I think that some boards will be better moderated than others. They do check the reports that users like you and I make, and they act on them. You will see the successfully approved percentage increase/diminish depending on whether the moderator agrees with your report.
It's also good to report bots - I have seen a few recently (I read that somebody else reported them) - it is believed that their activity is being boosted such that they can be sold on to others. They tend to post one word responses, or in some cases they will grab part of a response on a previous page. Bastards!