Recommended for websites with social media profiles. This plugin allows you to easily create a widget that links to your popular social media profiles, such as Facebook, Twitter, and LinkedIn.
Recommended settings: check the “Open links in new window?” box. This allows your visitors to easily come back to your website after viewing your profile(s). If your profile link does not open in a new window/tab, then your visitor would have to hit the back button on their browser to return to your website.
For more information, see the plugin page(s):
http://wordpress.org/extend/plugins/social-profiles-widget/
http://www.studiopress.com/plugins/social-profiles-widget