With tablets showing up on more and more kids' holiday wish lists (littler and littler kids!), parents will appreciate any help they can get with keep tablet use safe as well as fun. And there's help over at TechHive, which reports that Amazon Kindle Fire HD, Barnes & Noble Nook HD, and Apple’s iPad, all have some built-in parental controls (e.g., FreeTime on the Kindle Fire and Restrictions … [Read more...] about Holiday help: Parental control tools for tablets