Technology Roundup
- Amazon, Pepsi music promo sounds like trouble for Apple [seattle times, nyt]
- Energy use cut if savings are apparent, study finds [pi]
- EU launches new probes against Microsoft [nyt, pi]
- Grocery carts to get auto-checkout [pi]
- Sold-out Kindle lacks rave reviews [pi]
- Video game industry, including Nintendo, seeks political clout [nyt]