Can our profile predict our interests ? Obviously yes ... But can we extract these interests in a systematic way based on semantic-only short information ? If yes, the applications are really important, but it would questions also our degree of autonomy (or, how Kant's philosophy joins the new technology).
Cantador I, Castells P (2011) Extracting multilayered Communities of Interest from semantic user profiles: Application to group modeling and hybrid recommendantions. Computers in Human Behavior, 27:1321-1336.