Parents might be interested in the latest reviews of filtering and monitoring software here at PC Magazine. The top-rated products are Net Nanny 5.6, Bsafe Online, Safe Eyes, and Webroot Child Safe. Note that these are "client" software products you install on the family computer. If you have the latest operating systems on Mac and Windows PCs, you can simply configure and use OS-level parental controls that are pretty feature-rich. But all these – OS or client – work only on the computers they run on. Kids' access on any other Net-connected computer or device (including those at friends' houses and, increasingly, cellphones) can be unfiltered, which means it's also good for kids and parents to work together on testing and using the filters between kids' ears: critical thinking and media literacy! Here, too, PC Magazine's parental-controls buyers' guide – a little old, but still offering good advice.