We found some new twists (selfies as promotional tools), major shifts (have you considered downscaling hotels?), little wows (smartphones as room keys), and big impressions (a wall of Instagram photos) to share with you in our roundup. We'd love to know what's on your radar screen, too. Please leave a comment and tell us what we missed, what you're looking forward to, or even what you wouldn't mind saying farewell to in 2015. (Read the story in our interactive tablet ...

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