We can find out the member number on the orkut by this ID..
But now a days this Trick has been stopped by the orkut policy. for this they masked the profile pictures by a smallest transparent image know as b.gif So we can find the actually membership of the user by this.. But i have found another trick for this..
The trick is that we can save the image from the friend list of the member profile where showing 9 friends of the member..
My member number is 29974447 Its means that before my sign up 29974446 users are already part of the Orkut.

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