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A system and method for crowdsourcing user-provided brand identifiers and distributing content based on crowd-sourced identifiers is provided. Different user-provided brand identifiers are extracted from messages provided by users of a social network. The identifiers are aggregated into two or more aggregate identity groups. When a brand identifier associated with a user request for content is determined to be in at least one of the aggregate identity groups, content items comprising one or more other brand identifiers of the at least one aggregate identity group are provided to the user.