Sailthru, a start up that is trying to make “smart data” out of “big data,” has raised $19m in a Series B investment round led by Benchmark Capital.

This is the second investment to close in as many days for Benchmark, which led a $13.5m Series A fundraising round for Snapchat, the ephemeral social networking service that lets people post photos or messages that self-delete after 10 seconds or less. That company is valued between $60m and $70m. Read more

ResearchGate, a social network for scientists and academic researchers, has received a second round of venture funding from Founders Fund, adding to the growing cadre of health and science related social start-ups attracting the attention of Silicon Valley investors.

The Series B round builds on the company’s earlier financing from social networking VC gurus Benchmark and Accel in 2010. The company did not disclose the funding amounts for either round. Read more

Kleiner Perkins doesn’t admit new partners often. Last year it was the turn of former “Queen of the internet” Mary Meeker, the first to get a seat at the table of one of Silicon Valley’s top VC firms since video games star Bing Gordon in 2008.

So the appointment of Mike Abbott, former vice president of engineering at Twitter, looks like an important hire. Read more

Twitter’s usage has been soaring into the stratosphere of late; now its finances are receiving a similar boost.

The microblogging service announced on Friday it had closed a funding round led by A-list VC firms Benchmark Capital and Institutional Venture Partners.

The figure is $35m, but there is no official word on what valuation that gives the company. Read more