Welcome! I think it is a huge improvement over Facebook, it is much easier finding articles and sharing knowledge with other instructors in this format. I would think it is 620 or something, there were a good deal Udemy employees on the platform before it was open. You can see the # in your profile URL https://community.udemy.com/t5/user/viewprofilepage/user-id/XXXXXX <-- that is your ID
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