12. One or more non-transitory computer-readable media storing instructions that, when executed by one or more computing devices, cause performance of: generating one or more query logs that record information about previously received search queries, including, for the previously received search queries, indications of in which specific contexts, of a plurality of search contexts, the previously received search queries have been made over at least a period of time; receiving a search query; determining at least one suggested query, of the previously received search queries, based on the search query; determining, for each specific search context of a plurality of search contexts: a log-based relevance score of the search query to the specific search context, the log-based relevance score being calculated, at least in part, using a count of how many times the search query was made in the specific search context over the period of time, and further using a count of how many times the suggested query was made in the specific search context over the period of time, as recorded in the one or more query logs; wherein each search context of the plurality of search contexts is a different set of searchable information; responsive to receiving the search query, sending an indication, for each specific search context of the plurality of search contexts, of a relative size of the log-based relevance score determined for the specific search context compared to relative sizes of each other log-based relevance score determined for each other search context of the plurality of search contexts.
15. The one or more non-transitory computer-readable media of claim 12 , wherein the instructions, when executed by the one or more computing devices, further cause performance of: determining two or more suggested queries for the search query, wherein at least a first suggested query of the two or more suggested queries is different from the search query; based on the one or more query logs, determining, for each particular suggested query of the two or more suggested queries, for each specific search context of the plurality of search contexts, a number of times the particular suggested query was made in the specific search context over the period of time; wherein each particular relevance score of the log-based relevance scores is based at least on the numbers of times determined for the two or more suggested queries with respect to the specific search context to which the particular relevance score pertains.