<http://schema.org/caption>
"BlackSheep keeps an eye out for nefarious session hijackers using Firesheep (Image: &lt;a href=\"http://www.flickr.com/photos/tanelteemusk/\" target=\"_blank\"&gt;Tanel Teemusk&lt;/a&gt; via Flickr)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://newatlas.com/combat-firesheep-with-blacksheep-firefox-add-on/16881/>