Marissa Mayer

Yahoo announced that it now counts 300 million mobile monthly users, up from 200 million at the end of last year. The company said the rise is partly due to a recent overhaul of its mobile and desktop sites, but is also likely due to users' overall shift from desktop Internet surfing to accessing the Internet from their smartphones.

Yahoo is streamlining its product lineup, eliminating a series of mobile and Web properties including its news and messaging app for BlackBerry.

Yahoo acquired Alike, a mobile app that helped users discover nearby venues and places to visit. As a result, Alike said it will shutter its iPhone and Web apps, but the company's employees will join Yahoo's mobile business.

Yahoo! has continued its move into developing online video offerings for smartphones and tablet computers by acquiring Silicon Valley mobile startup OnTheAir.