1. A method comprising: tracking activity with respect to a first query result of a first query and a second query result of a second query, the activity being performed by users of a network publication system; counting, from the tracked activity, a number of search events corresponding to users that viewed the second query result subsequent to the first query result and performed post search activity on the second query result; determining, using one or more processors, that the number of search events exceeds a predefined threshold; receiving the first query from a client device of a subsequent user; and recommending the second query based on the determining that the number of search events exceeds the predefined threshold.