In your admin under the site settings–profile area there is the ability in the new admin panels (as of 2/15/2010 and on) to add social media icons to your site (ex: facebook, twitter). You are able to upload multiple icons to your site.
To get started you will need to upload your own social media icon to your image bank as a .png file
(ex: facebook.png, twitter.png)
Note: If you don’t have an icon you can easily find one by searching the terms “social media icons” in Google. You may need to resize the icon–a good start is 25w x 25h in pixels, but you can resize accordingly to your preference.
Once you have resized and uploaded the icon to your image bank, then you can link up the icon with your social URL in the social media area in the admin like this:
Save changes and you’re done.