Systems, methods, and computer-readable media for enabling a plurality of mobile communications devices to be used in parallel to comment on presentation slides within a deck are disclosed. The systems and methods may involve receiving a first and a second comment on a first slide; receiving a third and a fourth comment on a second slide; identifying a first and a second repository associated with the first and the second slide of the presentation, respectively; aggregating the first comment and the second comment in the first repository; aggregating the third comment and the fourth comment in the second repository; displaying to a presenter of the deck the first comment and the second comment in association with the first slide; and displaying to the presenter of the deck, the third comment and the fourth comment in association with the second slide.