It is common courtesy to follow the headline of such a disgusting story with (Major Barf Alert!) This will prevent Freepers from hurling if they've just eaten and have chosen to read the article. It will also warn Freepers who don't want to read such articles to steer clear. Other variations (i.e. Hurl Warning!, A Real Cookie Tosser!, Not For Those With Weak Stomachs!, Keep Your Barf Bag Handy!, This Article Beats Ipecac For Inducing Vomiting!) may be used and are okay as long as the meaning is clear.
I normally don't complain to other Freepers about etiquette, but I almost ejected my calzone when I read this one.
Sometimes I forget that we're such sensitive souls around here.