I like the idea, but I'm wondering how it could be implemented in a way that users wouldn't fill the tags with resteemed content making it harder to find original articles.

Maybe hide these resteemit articles from the main feeds? They'd only show on a user's blog? Then the user can resteemit anything they find interesting and it would show in their followers feeds​?

This would have the benefit of deterring users from "resteeming" a lot of spam or uninteresting content. Since it would bury their own.

Just suggestions and random thoughts on the subject.