From Zachary Rodgers at ClickZ:

I/PRO Corporation has acquired the technology and customers of Accrue. The deal adds a new analytics product to I/PRO's suite of Web site auditing tools.

From Heidi Cohen at ClickZ:

Some marketers assume once they drive customers to their site and acquire contact information, the job is done. In reality, you must create a site customers want to return to. For many online marketers, retaining existing customers is at least as important as acquiring new ones. To maximize revenue, you must engage new customers as soon as possible to start building a long-term relationship. It's cheaper to retain current customers than to gain new ones.