Unfortunately every website has spammers, these 'members' sign up easily just to post links to their products, porn websites, etc and they spam every post on here with their crap.
Moderators would have to be here 24/7 to control it, and it's hard for them to do it if they also have jobs outside of the internet. So you guys will just have to put up with the spammers, otherwise just wait for the boss to delete these 'members'.