@Ultegra134, try to report each of the accounts individually with a link to their post history, and I hope that some mod instead of deleting posts will nuke all accounts - that's the only logical punishment. Newbies should not be able to post links until they prove they deserve it.
I've already reported them with a link to this thread. Hopefully, the accounts will get deleted and the posts removed. Not only are they spamming the whole forum, but also promoting a sketchy service. I'm supporting your opinion and I also believe that newbies shouldn't be allowed to post links, perhaps you could make it a forum suggestion.