Microsoft opened its 4th retail store in San Diego, California, the same day Apple launched its iPhone 4 device. The new store is four shops away from Apple's own store in Fashion Valley Mall, San Diego.
"San Diego's store join the first two locations in Scottsdale, Arizona and Mission Viejo, California and recently opened Park Meadows Mall in Lone Tree, Colorado, and offer all Microsoft products including keyboards and mice, Windows 7, Xbox360 and many more products. Also, Microsoft is planning to open a fifth store in the Seattle area."
Apple currently has 222 stores in the United States alone, and 287 total stores worldwide, including 27 in the UK and 14 in Canada.