Indeed... I guess it was inevitable that the community would eventually get some spammers, but a down arrow would be nice. Better yet, just some system to report spam. If you look at this guy's profile, he has been a user for 17 hours, has 15 submissions, all low quality and spam, although some more obvious than others.
Clearly this is one of the more spammy ones, unless news.YC has a large demographic of unemployed nurses that I did not know about.