"Your Gmail address is already filled in, and since you've already logged into orkut, we don't have to ask for your Gmail password once again. We'll show you the contacts who are already on orkut, and let you choose which ones to add as friends. For contacts who aren't on orkut yet, we make it easy to choose the ones you want to invite to orkut. You can even add a personal message to send with the invite. Soon, we'll be adding support to import your contacts from other email accounts," promises Jude Britto from orkut.
Even if you don't use orkut, some of your Gmail contacts might have orkut profiles with juicy details. I wonder if Google would have integrated orkut's data in search results if the service was more popular. orkut lets you find people using advanced filters, but unlike Facebook, you can visit any profile if you are logged in with a Google account. In Brazil and India, orkut is the fourth link in the navigation bar and it sends you to a universal search page with results grouped in three categories: users, communities and topics. orkut, the personals and people profiles categories from Google Base could be the foundation of a people search service.Gmail, Orkut, Google, Facebook, Internet Profiles, Social Networking, Social Media, Social Network
Source:→ google system