As one more of its security measures, Orkut has removed email addresses display from its Friends Page.
Before we were able to see primary email ids of friends on that page under their names, but you can get their email addresses from the contacts tab.
You can see your all contacts on this tab and you can identify your Orkut Friends by the icon (
) next to their names. This is a minor update there is no real utility value to this improvement except that the friends page is looking a little cleaner. Such minor updates often go unnoticed