The funding was led by Investor Growth Capital, the growth-stage venture capital arm of investment house Investor AB, along with existing investors Centurion Holdings, Ignition Partners, In-Q-Tel and WPP.

Matt Krna, vice president at Investor Growth Capital, said: “Many solution sets give the ability to listen but fail to provide what’s really needed – the power to transform social data into strategic programmes and tactical plans. Visible Technologies has defined itself as a clear category leader through its strong technology solution set, best-in-class customer service and proven success delivering actionable social media intelligence.”

Last year, Visible Technologies bagged an undisclosed investment from the CIA’s investment firm, In-Q-Tel, and a $2m cash injection from WPP.

It was the third time WPP had invested in the blog-watcher, following deals in 2007 and 2006.

Visible Technologies is led by Dan Vetras (pictured).