Since the old trick to send friend request then choosing edit to view their email id on friend’s page is not working any more, So here is the new tricks to find email id of any orkut profile. But for this tricks to be you must have Google Talk installed in your computer.
Here is the trick ....

1. Go to any members profile whose email id you want to find and who is not your friend. (Because you can always view your friends email id by going to friend’s page)
2. After going to his/her select ignore user option which is on left side below picture.
3. Now log into Google Talk and go to Settings >> Blocked.
4. You will get all ignored peoples name and email id there!