“A researcher from a Dutch university is warning that Facebook’s ‘Like This’ button is watching your every move. Arnold Roosendaal, who is a doctoral candidate at the Tilburg University for Law, Technology and Society, warns that Facebook is tracking and tracing everyone, whether they use the social networking site or not. Roosendaal says that Facebook’s tentacles reach way beyond the confines of its own web sites and subscriber base because more and more third party sites are using the ‘Like This’ button and Facebook Connect.”

— Slashdot