It's hard to know where to start when listing the problems with Hot or Not. Its focus on objectifying other people is hardly new -- the sister website has been around for years -- but it has gotten no less offensive. The signup process is especially invasive, requiring you to supply a valid email address or give the app access to your Facebook account -- and a working cell phone number to send you a validation code. The potential for trouble in unmoderated messages is immense. And, while the app might say teens can't interact with adults, there's no age verification.

There does seem to be some moderation of pictures -- as we were unable to find any nudity, though the app does warn it might appear infrequently. But even with that, it's still an inappropriate choice for kids.