You have observed that certain change in orkut Url affect many websites and Orkut User scripts. But many few know that orkut.com is still alive and Orkut.co.in can be changed to Orkut.com easily In One click.
If you search around yours orkut profile you will find the link at the bottom of yours orkut home page as shown in image below.
orkut.com and orkut .co.in affects very much both from inside and outside ,change in orkut url affects yours orkut search very deeply ,you can observ this change after using both Url in yours orkut profile.
Another most important affect of this change is reflected in all User scripts when you will shift from orkut.com to orkut.co.in or viceversa many orkut scripts and addons starts stop working ,Orkut have implemented this feature to stop spreding of virus from one country to another. As viruses and cripts are created on specific domain, Change in Url affects very much specially those who surf here profile mostly from add-ons, scripts, etc.
Change in orkut url help orkut to add new feature based on country as for example orkut sms feature is implemented in Brazil but not in India (they work on ip adress also), Orkut is still working to enhance this feature that will helps orkut users to surf with more safety.