How do I mount my new flatscreen HDTV on the wall? Can I permanently erase my name from the Web? How do I get “Big Pimpin'” as my ringtone for free?

All good questions. And all are answered by the brightest tech minds we know in PopSci’s monthly “Ask a Geek” feature. Today we bring you a roundup of our favorites, but we know there’s more. Do you have a different answer to one of the questions posed to our chorus of geeks? Or maybe a question of your own you’d like to see answered? Sound off in the comments below. —John Mahoney