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Pop quiz: What's the most popular way to store photos in the world? If your answer was Flickr, you're wrong. It's Microsoft Windows, duh. Commentards are cracking jokes about "Microsoft Flickr 2011 Home Premium Edition." Well, let's talk about Flickr. Flickr has a hardcore base of users prone to complain about anything and everything, and the Microsoft deal is no exception. But Flickr's biggest competitor isn't Shutterfly or Smugmug or Snapfish; it's indifference. Most photos lie unseen and unloved on PC hard drives, if the shooter has even bothered to upload them. Think about Flickr being built into the next version of Windows. That would actually be a reason to upgrade. (Photo by dr_lopbot)