Systems and methods are provided for, in response to determining that a user has not elected to opt into (or that the user has elected to opt out of) the privacy policy, using limited functionality of an electronic search system to select data items from a set of candidate data items to be transmitted using a first selection criteria (which is not based on personal information of the user). The system and methods may be further configured to, in response to determining that the user has elected to opt into (or that the user has elected not to opt out of) the privacy policy, access personal information of the user, and use full functionality of the electronic search system to select data items from the same set of candidate data items based at least in part on the accessed personal information about the user.