Unpopular opinion time - at least with teens! Websites like Reddit, Tumblr, even Twitter have little to no filtering, and that means kids can stumble upon inappropriate posts without even searching them out. Since parents can't monitor kids' online usage all the time, it's better to block some sites from the start. Sarah Kimmel shares ten websites she recommends blocking on your kids' devices. A lot of these sites we use as adults, but as a child, they pose more of a threat. Sarah shares how to block websites on Apple, Windows, and Android devices.