Posting questions from search queries

The present disclosure is directed to a system and method for posting questions from search queries. In some implementations, a method includes identifying a plurality of different questions previously searched. The previously-searched questions each include a word indicating a question. The previously-searched questions are filtered to remove one or more specified words included with the question word. At least a subset of the plurality of previously-searched questions that can be used to generate a canonical form after removing the one or more specified words are determined. The subset of previously-searched questions are ranked based, at least in part, on a frequency of submission of each previously-submitted search query in the subset. A particular one of the previously-submitted search queries in the subset is identified as representative of the subset of previously-submitted search queries based on the ranking.