Abstract: A system and method for incorporating branded creative contents into messaging services. In one embodiment, a method comprises receiving profile data associated with a user of a user device; receiving a plurality of bids, the plurality of bids corresponding to bids generated by a plurality of advertisers for providing branded creative contents to user devices; identifying a subset of the plurality of bids based on the profile data associated with the user; generating a set of conditions for identifying a winning bid within the subset of the plurality of bids; and transmitting, to the user device or an intermediate device, data descriptive of the subset of the plurality of bids, identifiers of creative contents associated each bid of the subset, and the set of conditions.

Abstract: A system and method for aggregating and analyzing user sentiment data is provided. A method includes causing an advertisement to be displayed by a user device along with a plurality of non-alphanumeric sentiment indicators indicative of user sentiment. The method further includes receiving a user reaction to the advertisement, and transmitting an indication of the reaction to a server.