''Online Privacy Fears Stoked By Google, Twitter, Facebook Data Collection Arms Race'', ''Your E-Book Is Reading You'', '' 'Instant personalization' brings more privacy issues to Facebook''. These are only a few recent examples of media headlines that deal with the issue of online privacy and personalization. Scholars and managers have repeatedly stated the benefits of personalization which is targeting products and services to individual customers, and constitutes a key element of an interactive marketing strategy. In order to accurately estimate the needs and wants of customers, it is...