Google Friend Connect let website owners get to know their users, encourage users to get to know other and personalize their site content, including Google ads. • Custom newsletters offers newsletters. You can select to send them to your entire Friend Connect audience or send newsletters according to interest. • Google Ads - integrated AdSense with Google Friend Connect will be giving publishers the option to show relevant ads that match visitors' interests based on the details they share. • Personalized Content Gadget - Google’ll use user interests to show content throughout your site that's relevant to those interests. Here’s a quick tour of new features:

More info: Social blog