1. A method for facilitating recommending information by users within a computer social network, comprising: building for a user a recommendation list comprising at least one two-tuple, wherein each two-tuple comprises a target user name and an information item, wherein the target user name represents a target user and the information item represents information to be sent to the target user, and wherein a first two-tuple in the recommendation list comprises a first target user name and a first information item; ranking the recommendation list by using two-tuples in the recommendation list as basic units; displaying the recommendation list to the user; receiving from the user a selection of the first two-tuple in the recommendation list; and interpreting the selection of the first two-tuple in the recommendation list as a recommendation of the first information item to a first target user represented by the first target user name, wherein the first two-tuple represents both the first information item and the first target user, and wherein selection of the first two-tuple simultaneously selects both the first information item and the first target user for the recommendation.