Venture capital firm LightSpeed Venture Partners led the B round, which also included Tornante Company, the investment firm led by Michael Eisner, former chief executive (CEO) of media group Walt Disney, who will give TaskRabbit strategic advice.

Alongside Comcast Ventures in the $6m series B round were venture capital firms Interwest Partners and Blumberg Capital, and angel investor Raymond Tonsing.

In June, TerraPower said it had visited India's Bhabha Atomic Research Centre (BARC) and the Indira Gandhi Centre for Atomic Research (IGCAR) and met with potential investors.

The low-end smartphone manufacturer has raised $90m in its series B round, with investment from Qualcomm and IDG.

The presentation software company backed by TED Conferences and telecommunications company Magyar Telekom, secures Series B funding led by Accel Partners.

The building technology company co-founded by Frank Gehry has raised $10m in series B financing with involvement from 3D design software firms.

Fab.com, previously backed by US news provider Washington Post, raises $40m only five months after it reportedly raised $8m in its Series B.