Smart journal app reported to be raising a $50m series C funding round.

Path, a US-based social network and journal app for mobile devices, is reported to be raising a $50m series C funding round at a $500m valuation.

In April 2012, Path raised a $30m series B funding round led by Redpoint Ventures and including US-based bank Allen & Co, Sir Richard Branson, founder of UK-based conglomerate Virgin Group, and Russian businessman Yuri Milner, founder of Digital Sky Technologies.

Path previously raised $10.8m of a planned $11.6m round in February 2011.

Path…