Hi Astrid, in American we have Social Security numbers (SS#) – they follow us all through life. It's like our national retirement fund. You should never give it out to have something shipped to you from another country – I buy international all the time and no one has ever asked me for my SS#.
PS – Loved the pic! Take care, Katita <img src='style_emoticons//biggrin.gif’ border=’0′ style=’vertical-align:middle’ alt=’biggrin.gif’ />