I was recently thinking about this issue of users upvoting the content of well-rewarded bloggers without reading, just to get curation rewards... But I didn't know what could be a solution to that.

While anonymous posts can solve this, I don't see Steemit succeed as a totally anonymous platform. This could not only cause plagiarism, like @katharsisdrill has mentioned, but also a lot of low value and irrelevant content, as users won't care about their reputation that much.

Maybe a partial solution can exist, when the posts are anonymous first, and open up after payouts. Not sure this is technically possible though