Sure, a lot of people would say that we could subsidize the freemium business model for a few years until we built up a loyal customer base, then switch to a paid service.

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He's a switch hitter who could play third base and outfield, a respected veteran and a proven postseason performer.

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"The fifth base is like a switch - switching on the genes and making cells healthy or diseased, " Alex Olek, the chief executive of Epigenomics, told the BBC.

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Gyorko started at second base and moved to third in a double switch.

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Moving to the front, the left earcup has a click button that allows you to switch from the optical input or the stereo input on the base, while the right cup controls the four EQ options that are available.

ENGADGET: Tritton Warhead 7.1 Wireless Surround Sound Headset for Xbox 360 review

Outdoor gear retailer REI recently decided to replenish its base of PCs only once every five years instead of three years, thanks to a switch to flat-panel screens that last longer.

FORBES: The Customer's Revenge

While the BB10 may help spur a replacement cycle inside of the existing user base, the real question is whether or not it can get iPhone and Android users to switch.

FORBES: An Apple Win Deals Another Blow to RIM's Blackberry