Smile, you're on Vacucam! LG's Hom-Bot (RoboKing in the US) was zipping around its own special playpen on the stage at the company's IFA booth today, picking up the occasional speck of dust and using its dual cams to spy on bloggers and Germans, while also diligently avoiding a plastic family dog along its ten-square-foot cube of real estate. The bot's Smart ThinQ technology enables it to interact with an Android or iPhone app, which you'll use to watch a live vi