VigLink has announced that it raised $18 million in Series C funding led by RRE Ventures, with participation from existing investors Google Ventures, Emergence Capital and First Round Capital, and additional investment from Correlation Ventures and Silicon Valley Bank. The cash will be used to fuel the company's international expansion and address advertiser needs. VigLink had previously raised a total of over $7 million through three rounds of fundraising. Its Series B round came in at over $5 million with a valuation of almost $20 million in 2011. The company provides a platform for content-driven commerce, processing 10 billion pageviews and 500 million clicks monthly to help merchants understand which links drive the most revenue.