Our small crew of volunteer moderators can't keep up with all the posts, so we rely on help from our users to spot potential problems.
You can mark a post:
Vulgar / Inappropriate
Your reports are seen only by moderators, who will investigate. Even if you're only mildly suspicious of a problem, let us know so we can investigate. It's super helpful to be pointed to potential hot spots.
Oh, and if you like a post, you can let us know, too, by marking it "Great!!" (it doesn't actually do anything, though!)