Today, Turn announced that its secured $20 million in its fourth round of funding, totaling $57 million. PaidContent reports: As both positive and negative attention is ramped up on the targeting space, Turn plans to use the proceeds to build out its technology offierings as well as pursue European expansion. It (Turn) has evolved and is now mostly known as a demand-side platform, though Demas feels that label is a bit too limiting. Certainly, a lot has changed in the real-time-bidding space since the company’s last $15 million funding round. Given those changes, plus the rising demand for online ad targeting, the company felt the need to tap investors for its biggest single round yet. Read the full story on PaidContent.org >>