Our favorite Lifehacker posts of the week show us how to keep our secrets, take naps and sell our gadgets for cash. We've got a few of our own favorite posts this week as well.
• Privacy! Know how to get it and know how to hide your stuff from other people
• Learn how to take a nap REALLY HARD
• Find Google images that match your exact dimensions - useful for wallpapers
• A new version of Grand Central is coming. That's the free multi-phone calling thing we've posted about before, before it was purchased by Google
• Google's web drive is probably coming soon? Maybe?
• Sell your used electronics to Gazelle for cash