IMPORTANT: Facebook and LinkedIn have changed their systems so that you now have to re-connect to their sites every 60 days otherwise you will not be able to make posts from products and blogs to them automatically from your site.
Currently, you will need to keep a record of when your 60 day period expires and then go through the Connect program to re-authorise your site with them. If you go past the 60 day period then your posts will not appear on those sites although it will appear to have posted.
Twitter is unaffected.