Titans nab apps and grab maps to fill the gaps

Domestic Internet giants are on a merger and acquisition spree as the nation is moving fast into the mobile era, reports Meng Jing

Would you consider buying a startup with just 50 employees for $19 billion? Mark Zuckerberg, co-founder and chief executive officer of Facebook Inc, the world's largest social network, did just that in late February.

The real motivation for the lofty price was the fast-growing mobile messaging service called WhatsApp.