Thx, Platonides, for checking it.
Those who use embed javascript from
widgets.twimg.com include
http://www.wikilovesmonuments.org/, not listed.
I copied it from there to show #wikilovesmonuments tweets, as probably others did.
Vicenç
Date: Tue, 28 Aug 2012 16:57:45 +0200
From: platonides(a)gmail.com
To: wikilovesmonuments(a)lists.wikimedia.org
Subject: [Wiki Loves Monuments] List of wlm websites including third-party content