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Crowd-sourced taxi service Uber and photo-sharing service EyeEm announced an interesting partnership today: EyeEm will give you $20 in Uber credits no strings attached via a promo code, but if you're willing to document your Uber travels using the app, you can win even more credit and keep on traveling around town for free.

Lytro is seeing more and more competition these days, as more and more companies are jumping into the "snap now, focus later" game. There are now apps that mimic the technology, and companies like Toshiba are working on building Lytro-style smartphone camera modules.

Lytro's latest challenger may be quite a formidable foe: it appears that Nokia has invested in Pelican Imaging, another startup that's working on building Lytro-style smartphone camera arrays.