You could do this with RSS. Let me add an RSS feed to my account, and consider each new item in the feed to be a new revizr document owned by me. Consider changes to the item text to be authoritative changes, i.e. versions approved by me. Let me put a link in or around my posts that takes anonymous readers to revizr.com/from_blog/my_username/blog_guid where they can make edits.
This would make it a pretty viable "suggest improvements" tool for bloggers, very easy to integrate with any site that has a full text RSS feed.
This would make it a pretty viable "suggest improvements" tool for bloggers, very easy to integrate with any site that has a full text RSS feed.