Venture capital investors in Bazaarvoice include Austin Ventures (25.5% post-IPO ownership), Battery Ventures (13.9%), Eastern Advisors (9.2%), Constantin Partners, European Founders Fund and First Round Capital.
Here's a link to the Bazaarvoice press release of the IPO: http://www.bazaarvoice.com/about/press-room/bazaarvoice-inc-prices-initial-public-offering
Link to the IPO prospectus: http://www.sec.gov/Archives/edgar/data/1330421/000119312512076769/d213580d424b4.htm