Music-streaming service Spotify, with more than 24 million active users, has launched its first country ranking of the most-streamed songs (Spotify Top 50) and most-shared songs (Social 50). This weekly ranking will be updated every Monday and available as a free widget, with rankings for all of the 28 countries where Spotify is available.  In the US, "Can't Hold Us" by Ryan Lewis and Macklemore tops the Spotify 50, while in the UK Daft Punk's "Get Lucky" is in the lead.

American teenagers are sharing more information about themselves on social media sites, but taking steps to protect their privacy online, a study showed Tuesday. The new survey showed 91 percent of those surveyed posted a photo of themselves, up from 79 percent in 2006; 71 percent post the city or town where they live; and 53 percent posted their email address. But the survey of youth aged 12 to 17 also found 60 percent of Facebook users set their profiles to "private," which limits who can view their data.

American teenagers are sharing more information about themselves on social media sites, but taking steps to protect their privacy online, a study showed Tuesday. The new survey showed 91 percent of those surveyed posted a photo of themselves, up from 79 percent in 2006; 71 percent post the city or town where they live; and 53 percent posted their email address. But the survey of youth aged 12 to 17 also found 60 percent of Facebook users set their profiles to "private," which limits who can view their data.

Samsung is courting developers in the hopes of bringing more Galaxy-feature-specific apps to its existing and future handsets. The South Korean phonemaker is launching The Samsung Smart App Challenge 2013 for Galaxy SIV, a global competition for app submissions that will help its Galaxy SIV smartphone owners get even more from the company's ‘Group Play' service -- a set of in-built features that allow  users to share multimedia content simultaneously between devices.