Updates on technology for the home from the tech blog Slashdot: Is Your Printer Ripping You Off? Is it worth buying the printer ink from the company that made your printer, or can 3rd party companies perform as well with lest cost? Check out the independent research. Wal-Mart Begins Push Towards HD-DVD...Wal-mart puts its buying power behind what it sees the future in high-definition DVD to be. GPS Without the GPS Device... Boeing is developing a "Robust Positioning System," based on cell signals, television transmissions, and other clues to provide position information when GPS is unavailable.