In a digital-centric world, these are the very hottest digital destinations, grabbing the attention of consumers and advertisers alike—from news sites (The Huffington Post, The New York Times) to ascendant social brand (Pinterest and Tumblr), from the most addictive mobile game (Angry Birds vs. Words With Friends) to our favorite time suck (BuzzFeed vs. Gawker). Here, you can vote on the best place to get your Ke$ha (or Bach) fix (Spotify or Pandora?) as well as the hottest startup. Some of these players are so fresh you may not know much about them; others are already household names. All are turning up the heat.