1. A computer-readable storage medium storing computer-executable instructions for controlling a computing system to score discussion threads in a question-and-answer form, each discussion thread having a plurality of posts with terms, the computer-executable instructions comprising: a component that provides a query; a component that identifies features of a discussion thread, the features including a combined post feature representing a collection of the terms of multiple posts of the plurality of posts of the discussion thread; a component that generates feature scores for the features, the feature score for the combined post feature indicating relevance of the terms of the collection to the query; a component that generates a relevance score for the discussion thread based on combining the feature scores for the discussion thread; and a component that presents the relevance score as an indication of the relevance of the discussion thread to the query.
1. A computer-readable storage medium storing computer-executable instructions for controlling a computing system to score discussion threads in a question-and-answer form, each discussion thread having a plurality of posts with terms, the computer-executable instructions comprising: a component that provides a query; a component that identifies features of a discussion thread, the features including a combined post feature representing a collection of the terms of multiple posts of the plurality of posts of the discussion thread; a component that generates feature scores for the features, the feature score for the combined post feature indicating relevance of the terms of the collection to the query; a component that generates a relevance score for the discussion thread based on combining the feature scores for the discussion thread; and a component that presents the relevance score as an indication of the relevance of the discussion thread to the query. 6. The computer-readable storage medium of claim 1 wherein a feature of the discussion thread is an indication of whether the discussion thread includes an answer that has been verified.