I personally do not believe in them or someone here would have one tacked on the wall. But the DW does and she brought this home to show me. you be the judge!
http://www.dailymail.co.uk/pages/li...ews.html?in_article_id=490638&in_page_id=1811
http://www.dailymail.co.uk/pages/li...ews.html?in_article_id=490638&in_page_id=1811