6. C U LATER Source photo: http://collectionscanada.gc.ca/pam_archives/index.php?fuseaction=genitem.displayEcopies&lang=eng&rec_nbr=2837531&title=Queen+Victoria.+&ecopy=c130582k&back_url=( )
38. ROI du blogue Source : http://www.michelleblanc.com/2007/01/25/calcul-roi-blogues-affaires/ et http://www.forrester.com/Research/Document/Excerpt/0,7211,41064,00.html