The effective use of social media has been an important part of blogging for years now, but today your blog isn’t likely to gain any traction at all unless you’ve covered the various social features that users have come to expect: sharing options, profile summaries and buttons, authentication and identity, and so on. These plugins will get your WordPress blog up to speed in a hurry.

  1. Simple Twitter Connect
  2. Social Counters
  3. Social Connect
  4. Social Graph Protocol
  5. Social Media Widget
  6. WP Socializer
  7. Social Discussions
  8. Social Slider
  9. Social Metrics
  10. WP Social Toolbar

See : http://goo.gl/GBofI