If you started your online social life on Orkut but later migrated to Facebook, here’s a simple import utility that will help you become friends with all your old Orkut buddies who, like you, may have also shifted to Facebook.
Connect Orkut with Facebook
Step 1: Drag theon to the bookmarks bar of your browser.
This contact importer bookmarklet initially appeared on my Facebook homepage but it’s not there anymore. If you have trouble adding it to your browser, see video instructions on how to install bookmarklets.
Step 2: Login to your Orkut account and click the bookmarklet button. Alternatively, you may click here.
Step 3: The Facebook Friend Finder tool now scans your Orkut contacts list and will then show you a subset who are also on Facebook but aren’t friends with you yet. Click "Add Friends" and you are done.
The same friend finder bookmarklet may also be used for connecting with Rediff contacts.