Google Friend Connect is a service that helps site owners easily provide social features for their visitors. Users gain the ability to sign in to, make friends on, and interact with your site, making it more social and more dynamic. No programming expertise is required: just paste a snippet of code that we provide onto your site. Learn how to set up your site. As a user visiting friend connected sites, you can become members of sites and interact with other members who share your interests. You can also invite your friends from orkut, Google Talk, and other social networks to join the community. No need to create a new account for the site: simply use your Google, Yahoo!, AOL, or other OpenID account.

OpenSocial is a set of common application programming interfaces (APIs) for web-based social network applications, developed by Google along with MySpace and a number of other social networks.

a bit like QS

Share information over the Internet using public digital noticeboards

Google aims to show you relevant ads based on your interests. Use this tool to select interest categories so that the ads we show you are more related to your interests.