Outbrain, whose content recommendation engine lets publisher sites add related news links, is taking a $35 (£22.6) million fourth funding round, taking its total up to $64 (£40.96) million in almost four years.
The company says it wants to expand in to Europe and in to two new media – video and mobile web.
The money is led by Index Ventures along with Outbrain’s previous backers Carmel Ventures and Lightspeed Venture Partners. Index’s Dominique Vidal is joining Outbrain’s board.
Outbrain already opened offices in London, France and Germany this year and has already rolled out its mobile and video service.
It says it serves 3.5 billion recommendations per month that generate 200 million monthly content clicks.