

Here's the description from Google Finance
Art Technology Group, Inc. (ATG) develops and markets a suite of e-commerce software products, as well as provides related services, including support and maintenance, education, application hosting, professional services and proactive conversion solutions. Through its subsidiary, eStara, Inc. (eStara), ATG delivers OnDemand services for multi-channel interaction. Its Click to Call and Click to Chat services provides online businesses with proactive conversion solutions for enhancing online sales and support. eStara solutions allow customers to initiate a conversation with a sales person or customer care agent by clicking a button on a Website, e-mail, banner advertisement or directory listing, and eStara’s Call Tracking solutions allow advertisers to track the source of each in-bound call, as well as information about callers. In October 2006, ATG acquired eStara, Inc., a provider of proactive conversion solutions for enhancing online sales and support initiatives.