A few days ago I helped @tpsaras install social widgets to his Squarespace based foodblog Foodzine. Although Squarespace allows for a seamless implementation of social widgets, the catch here was to display them only under each post and not on the homepage.
First we had to create the necessary code for our Facebook and Twitter widgets, then add the code into HTML Snipsets via the Squarespace Website Management and finally hide the buttons from the homepage via CSS.