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I love the fact that the more active you are, the better rewards that you get, pretty cool concept!

Yes, and the fact that higher quality posts receive better rewards which encourages users to post stuff that is worthwhile reading.

This is a good valid point, hopefully this will increase the chances of good informative content!

Logically it must. The blockchain systems are unchangeable and incorruptible so the only way to get bigger rewards is to make the best content.