See this article Sears found to be using spyware to track visitors and you understand why you don't want to join My SHC Community from Kmart and Sears.
There, what Sears says it will track may be troubling to some: The software "monitors all of the Internet behavior that occurs on the computer on which you install the application, including ... filling a shopping basket, completing an application form, or checking your ... personal financial or health information."
