Twitter may launch its new advertising platform in March, but a question remains: Are hash tags the best means to flag sponsored content?

FORBES: Buzz Patrol

On Thursday morning, as news of the allegations spread, the hash tags lospapelesdebarcenas (the Barcenas papers) and RajoyDimision (Rajoy resign) were among the top terms trending among Spanish users of Twitter.

BBC: Spain ruling Popular Party denies slush fund allegations

From her unobstructed vantage point, she captures sleek runway images, filters and captions them with a dash of whimsy, attaching appropriate hash-tags and handles to share the love.

CNN: Blogger's power on display at New York Fashion Week