STELLAService has raised a $15 million Series B round led by Norwest Venture Partners with participation from previous investors DFJ Gotham and RRE Ventures. The company, which track and rates online shopping experience, will add NVP general partner Josh Goldman to its board. STELLAService uses analysts, accountants, and mystery shoppers to “stress test” the sales process on behalf of retailer customers like GNC, 1-800-Contacts, and Eddie Bauer. [Source: VentureBeat]