An automatic vouch for being a Mozilla employee.
Mario is very well known person in open source community for his great contributions. Even he is doing great as a Mozilla Rep. He is organizer of FOSSASIA, biggest FOSS event in Asia.
Mario is an active Mozillian as well as an active Mozilla Rep, known widely for his contributions to the open source communities. He is also popularly known as the organizer of FOSSASIA, and is also one of the nicest persons I have come across so far.
Mario is an active Mozilla Rep, his contributions to the open web are countless. Now he is known as the organizer of FOSS Asia.