Google will NOT allow Google Site users to use "share buttons" for other than Facebook, Twitter's tweet, and Google's +1!
Please share this page by copying the webpage url in the address bar and post it on another site such as Tumblr manually OR do like I do and install into your browser an extension for sharing, such as "AddToAny" and you will then be able to share ANY webpage to Facebook, Twitter, LinkedIn, Tumblr, etc.. In regards to Pinterest, Pinterest has a "PinIt" or "Save" to Pinterest button you can also add to your browser bar for saving to and sharing on Pinterest.
Please leave a comment in my guestbook embedded at the bottom of my Home page or at the link site, Artsieladie's Guestbook, just to say hello, give constructive feedback, and/or to ask a question. Thank you. Have a wonderful day!