Beware of Spider-Man

Things have been crazy busy at work this month, which is why I've been such an inconsistent blogger (like I need an excuse), but I saw this tag on the New York Times' "Spider-Man 2" review and I just had to share it: After an excellent review which touted the film's emphasis on human relationships over whiz-bang special effects came the advisory "'Spider-Man 2' is rated PG-13 (Parents strongly cautioned). It has some brutally violent scenes, and kissing." Like, "I'm okay with my pre-teen child seeing brutal violence, but kissing! Kissing is where I draw the line." How does kissing find itself on the same parental cautionary plane as not just violence, but brutal violence? Is Peter Parker just that bad a kisser?