Embodiments relate personalized data searches utilizing social activities. In one embodiment, a search query is received from a user. A set of search results that satisfy the search query is received from a search engine. A user interest profile associated with the user is identified. The user interest profile includes information associated with a set of activities performed by the user on one or more social systems. A ranking score is assigned to each result in at least a subset of search results in the set of search results based at least on the user interest profile. The subset of search results are sorted based on the score that has assigned to each result in the subset of results. The subset of search results that has been sorted is sent to the user.