Abstract: In one embodiment, a method includes retrieving one or more previous communications associated with a first user of an online social network, each of the previous communications having been made on a date in the past, and filtering out each of one or more of the previous communications based on one or more criteria, wherein the criteria are associated with a likelihood that the filtered-out previous communication will cause an unwanted emotional reaction by the user. The method also includes calculating a distribution-probability score for each of one or more remaining previous communications, wherein the distribution-probability score reflects a probability that the previous communication will be shared on the online social network by the first user, and sending at least one remaining previous communication to a client system of the first user, wherein the distribution-probability score for the previous communication satisfies a threshold.