Michael Robertson is the founder and CEO of WebinarTV. He's best known as the founder/CEO of digital music pioneer MP3.com which brought digital music to the masses by offering free web hosting for all musicians. MP3.com was acquired by the world's largest music company Vivendi/Universal. Then he founded Gizmo5, helping make phone calls free worldwide. This company was acquired by Google and became part of Google Voice. Other ventures include Lindows, which challenged Microsoft with a low-cost Linux desktop operating system with the first visual app store in the world. This company was acquired by Xandros.