Three Snippet Blocks
Squarespace has gone a step further by introducing three HTML-based Snippet blocks that allow you to use your Journal's config to add in just about any code you want; including a Facebook Like button, Tweet button, Google Buzz button, or just about anything else.
The simple drag-and-drop blocks make it easy to modify the page without technical programming skills. To activate them, use the variable they have provided while you're setting up the code. You can control where the buttons or blocks appear in your blog post quite easily, but it's a good idea to review the technical specs in the manual entry.