I am a full-time user of Ubuntu, world's most popular free operating system. I run GRASS GIS and Quantum GIS on my Ubuntu. April 28 is a memorable day for Ubuntu users as it marked the debut of new Unity interface which is a boon to usability. Unity has redefined the Linux Desktop and I laud the efforts of Canonical for taking the revolutionary decision to implement a new desktop environment. I am sure this decision will take Ubuntu a long way.