It's essentially a searchable database which produces a community-driven rating for the cringeworthy content of a film.
The database predominantly covers movies released between 1995-2015, with a few prominent exceptions in the early nineties - see
Sleepless in Seattle
Four Weddings and a Funeral
For instance, if you'd momentarily forgotten that
Team America: World Police
contains puppet sex scenes that'd be unbearable in the presence of a grandparent, one quick search can provide you with a reminder.
Now if only someone had mentioned this before that
Wolf of Wall Street