I have been exploring Social Media tools, especially ways to easily share bookmarks on blog posts, and I found a great solution today: www.addthis.com.
That little share box below has been added to my template, so it is automatically generated with every post. Click the share button for a list of common and uncommon bookmark sites. To save this post, click the one you use and it will add it to your listings.
And, I added a Subscribe to Feed button from addthis.com as well. It is at the bottom of the right side bar.