According to an embodiment of the present invention, a plurality of networked sensing devices monitor one or more activities of a first user, wherein the one or more activities of the first user are associated with a subject area. Information associated with the one or more activities of the first user from the plurality of networked sensing devices is analyzed to determine a level of expertise of the first user with respect to the subject area. A review by the first user is generated for an item offered on a network site, wherein the item pertains to the subject area. The item is displayed on the network site with the review and determined level of expertise of the first user in response to a search for the item for a second user.