Given that we just saw a USB drive that you can smell, it makes perfect sense that we'd find another to assault our senses in a different way. The "Exclusive USB Sound Flash Drive" from eNecessities is, contrary to its manufacturer's name, hardly something we must have. Quite the opposite, actually.
The last thing we need is a USB key or any other device to start chattering away on its own from the moment it's plugged in. Everything USB notes that the sound files, which can play for 10 or 20 seconds, are designed to make advertising pitches--most likely ones that are unsolicited but too late but impossible to avoid once they begin. If this is the price we have to pay for a complimentary flash drive, we might go back to floppy disks.