I just gone through Google Friend Connect.  You can see Google Friend Connect Gadget on my website. Find at right bar of my Website. I will appreciate to join me.  I also install Google Friend connect Plug-in for WordPress find it by submitting a comment. your comment will display with your profile photo and details.

following are the detail of Google connect.

Google Friend Connect means more people engaging more deeply with your website — and with each other

  • Enrich your site
    Choose engaging social features from a catalog of gadgets by Google and the OpenSocial developer community.
  • Attract more visitors
    Your users can easily invite friends from social networks and contact lists to visit and join your site.
  • No programming whatsoever
    Just copy and paste a few snippets of code into your site, and Friend Connect does the rest.

With Google Friend Connect, visitors to your site or blog can:

  • Sign in with their Google, Yahoo, AIM or OpenID account.
  • Interact with other visitors by making friends, sharing media, posting comments, playing games, and more.
  • Invite friends from other social networks and contact lists to join your site or blog.

Visit Goggle friend: http://www.google.com/friendconnect/home/intro

Update: I have removed this plug-ins due to some error and non compatibility with my design. i will ad this feature in my website soon