Add pending discussions.

wiki/src/todo/Return_of_Icedove__63__.mdwn

@@ -48,7 +48,11 @@ Things to be checked / researched
 * how is Icedove's "autoconfiguration file" fetched? (authenticated
   SSL? any information leak?) -> it's ugly:
   https://bugzilla.mozilla.org/show_bug.cgi?id=664633
-* general privacy/anonymity issues: [tagnaq's paper](http://bit.ly/qDZm7C)
+* general privacy/anonymity issues: [tagnaq's
+  paper](http://bit.ly/qDZm7C); some of its recommendations need to be
+  discussed: [[!tag todo/discuss]]
+  - do we really want to encourage people to use PGP-inline?
+  - `mailnews.reply_header_authorwrote = %s` is uncommon
 
 found answers
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