As the economic value of virtual assets rises, promoters desire to control, monitor and investigate abuses of those assets. Key to this desire are the terms of service (end user license agreements) that come with virtual goods and services. Often when a consumer accesses virtual products, she must legally agree to be monitored and investigated. This agreement affects her privacy. http://legal-beagle.typepad.
"Virtual goods include items that people buy on popular Facebook games like FarmVille, Mafia Wars or Sorority Life"
- Virtual Goods to Grow By 40 Percent Next Year, Study Says - NYTimes.com (view on Google Sidewiki)