Thank you for explaining. It was sort of difficult to understand at first, but I think I can help:
Posting or commenting alone doe not get you rewards. However, upvoting or downvoting content and reaching consensus with those also interested is what earns you REL.
I'm a little worried that this will be a consensus machine, but ultimately, considering there's an incentive to not flood the community with irrelevant information, it seems like it takes a capitalistic sense and molds it around a consensus platform.
This is pretty smart, actually. This should take off similar to STEEM.