In 2003, Robertson founded SIPphone, which developed free VOIP software called Gizmo5. Google acquired the company in 2009. Robertson also launched MP3tunes.com in 2005, a music download service without digital rights management (DRM). MP3tunes faced a copyright infringement lawsuit by EMI and eventually filed for bankruptcy in 2012.
In 2003, Robertson founded SIPphone, which developed free VOIP software called Giz:mo5. Google acquired the company in :2009. ,Robertson also launched MP3tunes.com in 20:05, a music download service without digital rights management (DRM). MP3tunes faced a copyr?ight infringement lawsuit by EMI and eventually filed for bankruptcy in 2012.