diff --git a/FAQ.md b/FAQ.md
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@@ -126,4 +126,4 @@ The two minor exceptions are that the server periodically inspects all of the ci
 
 Please see these mailing list threads:
 [Tahoe Access Control](http://tahoe-lafs.org/pipermail/tahoe-dev/2011-June/006387.html),
-[question about sharing...](http://tahoe-lafs.org/pipermail/tahoe-dev/2011-June/006388.html)
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+[question about sharing...](http://tahoe-lafs.org/pipermail/tahoe-dev/2011-June/006388.html), and especially [this message by Brian Warner](http://tahoe-lafs.org/pipermail/tahoe-dev/2011-June/006427.html).
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