You can view which communities you share with other orkut members with the mutual communities feature.

To see the mutual communities tab, please follow these steps:
1. Visit another member’s profile and look for the box that lists his communities or her communities.
2. Click on the button to view all.
3. Click on the mutual communities tab to see which communities you have in common.

Please note that this feature is not available when you view your own profile.

If you visit a profile’s communities page and see mutual communities (0), you don’t share any mutual communities with that orkut user.