1. A method of evaluating digital content displayed on an electronic tabletop device, comprising: receiving a plurality of non-intentional signals generated in response to a plurality of users interacting with at least one of the digital content displayed on the electronic tabletop device and each other; classifying the plurality of non-intentional signals into a first set of data comprising user-specific non-intentional signals and a second set of data comprising collaborative non-intentional signals, wherein each of the user-specific non-intentional signals corresponds to an individual touch interaction occurring between one user from among the plurality of users and the digital content, and each of the collaborative non-intentional signals corresponds to a collaborative action occurring between at least two users from among the plurality of users, wherein the collaborative action comprises the at least two users interacting with one another while the at least two users are also Interacting with the digital content, wherein the collaborative action comprises a collaborative touch interaction occurring between the at least two users and the digital content, and a verbal interaction occurring between the at least two users; correlating the plurality of non-intentional signals to user profiles corresponding to the plurality of users; and generating an evaluation report including information Indicating a collaborative quality of the digital content based on the plurality of non-intentional signals and a correlation of the plurality of non-intentional signals to the user profiles.