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I think "Dolphin Tech" even can be 1st step before contributors.
When someone join Unity and start using Dolphin, he take help of Forum and get answers of their questions.
No one only wants to take help, everyone wants to give back something which he have.
After few days or months he can be able to answer small question(not much technical).
If someone answers very clearly to freshers, Boonex can give a post to them.
If someone see more