<p>There are many colleagues in my workplace who uses Stack Overflow in the read-only mode. I try to encourage them to participate, but they always say that most things they look for are already there.</p>

<p>As time goes on, it is more difficult to ask different good questions (despite new subjects are always coming up). As a consequence, there are many closed and downvoted questions on that site, and the community handles them until a certain point.</p>

<p>A recent change in the SE system allowed users who carry a tag gold badge to cast binding votes on duplicate threads from that tag. I felt that questions labeled with Excel were more organized and easier to search, as simple questions were right away marked as duplicates to a canonical answer (e.g., <code>vlookup</code> questions). That somehow will make top answers more accessible to people coming from Google and other search engines.</p>

<p>This is a feature we could give more attention: linking recurrent questions as duplicates of canonical answers.</p>

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<p><strong>Update</strong>: SO is rolling out a promising feature to increase the quality level of its questions. First part of it, is the <a href="https://meta.stackoverflow.com/questions/278380/help-us-test-question-triage">Triage</a> process.</p>
