This thing is awesome. I have a few nitpicks that they just might not be able to do, technically speaking. I wish it consistently kept the settings like playlist or which artist/album I'm playing, shuffle, repeat, genius, etc. It seems to work more often for playlists, but I have yet to nail down the precise…

If you have an eraser that's really badly caked, compressed air won't do anything. But, usually you can wash the erasers. The ink is non-toxic and with a little soap will come right out. I've gotten the worst erasers that probably haven't been cleaned in years back to light-gray in about 5 minutes of light…