Left4Dead 2 the sequel to the record breaking survival shooter Left4dead has been performing pretty well with bugs until recently after getting all patched up. If you have been enjoying the game on ...

You don't need a physical scanner to quickly sign, scan and send official documents -- just use the iPhone in your pocket. David Lumb is a managing editor for the mobile team, covering mobile and ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...