The San Francisco gold rush didn't end in the 1800s, it just went digital.
Bay Area social media darlings Twitter and Facebook, along with Chicago-based coupon site Groupon, have gained nearly 70 percent in enterprise value since June, according to a new Nypex report, reported by the New York Times.
The three companies were valued at a combined $49.7 billion but the differences between each companies value is astounding.
Facebook was the most valued of the three at $41.2 billion, while Groupon and Twitter split the rest.
Perhaps most surprising was that Groupon was valued higher than Twitter. The group discount buying site checked in at $4.8 billion, right about what Google was rumored to be offering the company last month. Twitter was valued at $3.7 billion.
The report, made by an advisory firm for sellers and buyers of private company shares, looked at other social networking startups like Yelp and Zynga over a five month period.
