Joomla Free extensions

hello,
sorry for my poor and bad english, i'm french

i have installed and configured like your tutorial (word doc...), and all seems to be ok in joomla :
article is published in joomla
article edition says "Post successful"
and "Manager articles posted" says also successful....

but nothing on facebook, i don't understand why
www.facebook.com/christophe.gandhiji/

can you help me, and what do you need for ?

thanks