Profile information is not only limit with Social-network site. We can share profile information with Google Profiles. It is a new feature to share your profile information yourself with your contacts. It is not a public service we can control your Profile information with your friends and family. you can put your informations as like on orkut and share it with your friends and family. For more details visit Google operating system (unofficial google blog).
Source from: http://googlesys.blogspot.com/
