For the record I should note that CouchDB's durable storage format ensured that all the data affected by the 1.0.0 bug is recoverable. We think that in the end, because we announced the bug loudly and clearly, and provided a repair tool within days, no one lost any critical data.

If they cared for data-integrity above performance, they would be running with delayed_commits=false anyway, and thus would not be subject to the bug.