Google Friend Connect lets you grow traffic by easily adding social features to your website. This means means more people engaging more deeply with your website — and with each other. In the below video, Google Product Marketing Manager Mendel Chuang gives a short introduction to Google Friend Connect.
Google Adds Twitter
Google included Twitter in their Friend Connect program which means folks can stay connected with their Twitter network on web sites that have activated the service. This particular integration did not require effort on our part so it was a quick win for folks who use Twitter and want to connect on participating web sites.
Web 2.0: Who, What, Why, How 