US firm sues Twitter over patents

Apple's Android nightmare: Google's Motorola purchase...
Networking Blog: "Now, with Google purchase of Motorola Mobility, Android's maker will have the patents it needs to retaliate."

Beyond the desktop: Ubuntu Linux's new Head-Up Display
Linux and Open Source: "This new interface, which will first appear as a beta in April's Ubuntu 12.04 release, is called Head-Up Display."

Introducing Ubuntu Cities Scope for Unity
Softpedia: "New plugins for the Unity interface of the Ubuntu operating system, called Lens and Scopes, that will make your Unity experience much better."