Editing was intended to allow us to correct any Content we would personally want to change, obviously this can be abused! However there is no real solution to really stopping someone from doing this. I honestly think people would realize if someone copies & paste or re-uses content! Someone can always have multiple accounts to do this! It's really up to the Community on what they vote on! If someone can get away with constantly Posting & re-editing their content, i doubt they would make it far. However, only you as the Owner of the Account can edit your Content as pleased.

Issue resolved already, i think it was a Glitch

Basically Developers like Busy.org that built on top of Steem, can split rewards of Steemit user who engage on their platform, it's a bit more complicated. But eventually someone will make use of some Codes and build a user-friendly tool that will most likely allow us to somehow earn rewards from Steem outside of Steemit.com