Hello,
I read your requirements and found that you want to share purchased product detail on current logged in user's FB wall.
As per my good experienced in Magento, and good profile on E- lance, I am able to work with your requirements.
I know it is typical for you to trust on me but I assure you I will give you best output and give my full efforts to fulfill to resolve issues. I have only my words and my current profile.
Waiting for positive response.
Thanks & Regards,
Naveen Kumar Jain