Glassdoor.com is an employer review website that has raised $12 million in Series C funding. This round of funding was led by Battery Ventures. Existing investors Benchmark Capital and Sutter Hill Ventures also joined in this round. Glassdoor.com has salary data and employer reviews of about 110,000 companies across 100 countries. The website launched in 2008 and is now hitting about 3.5 million monthly unique visitors per month.