San Diego-based WebSideStory (www.websidestory.com) has filed for an IPO to raise up to $57.5M. WebSideStory provides web analytics services, which allow its customers to better understand how Internet users are responding to web design and content, marketing, and e-commerce. The company had revenues of $16.3M in 2003, and a net loss of $1.8M. The IPO is being underwritten by Friedman Billings Ramsey, RBC Capital Markets, William Blair & Company, and Roth Capital Partners. WebSideStory is backed by Summit Partners, TA Associates, Peninsula Fund, and Westcliff Partners. WebSideStory had filed and withdrawn an IPO in 2000.