Facebook XML Vulnerabiliry & maybe XSS

Vulnerable Link :
http://www.facebook.com/search/opensearch_typeahead.php?format=xml&q={blablablablabla%20what%20is%20this?%20xss%20or%20xmls?%20:))))}


Here some more Links, You should Analyse :
http://www.facebook.com/crossdomain.xml
http://vthumb.ak.fbcdn.net/vthumb-ak-sf2p/v10827/119/63/591250483/t591250483_10150090747365484_1395.jpg
http://static.ak.fbcdn.net/rsrc.php/v1/yY/r/NcdgX3e2GbI.css
http://static.ak.fbcdn.net/rsrc.php/v1/yg/r/vnWtCAcBiXn.js
http://static.ak.fbcdn.net/rsrc.php/v1/y3/r/hJvRUZ2EOeM.js
http://static.ak.fbcdn.net/rsrc.php/yJ/r/H2SSvhJMJA-.xml