A new variant of the Zeus trojan tricks users into exposing their debit card details by displaying rogue offers when they visit Facebook, Gmail, Yahoo and Hotmail, according to researchers from security firm Trusteer.

Twitter has acquired RestEngine, a two-and-half-year-old company that has helped social app publishers send emails based on a user's social graph, RestEngine said on Thursday.

Google plans to introduce in Gmail over the next few days a message translation facility that will enable users to get mail in other languages automatically translated into their own language.

Google underestimated the scope and consequences of the outage that hit Gmail on Tuesday.

Yahoo plans to cut about 50 properties and refocus on its core business, CEO Scott Thompson said in an earnings call on Tuesday.

If you're one of Gmail's 193 million users worldwide, you probably rely on the service -- and its add-ons -- every day. Popular among users for its customization features, Google constantly adds to its arsenal of Labs and brings new features mainstream to simplify processes and save users time.

Back in November 2010, Facebook announced plans for a "social inbox" -- a space that would serve as a hub for all communications that people use online or via mobile phones, ranging from text messages and chat messages to e-mail messages, too.