If per user is not possible, then perhaps per forum, or some other method? According to the current vote tally, it appears that “Unlimited” is winning out, but if there are problems in the future I would hope it would be possible that everyone would not have to be restricted due to a few who might abuse this feature.

Also for those who might not be aware, there is a “Reason for Editing” field at the bottom of the edit screen. We should be courteous and use this, or perhaps put a note in our edited versions (when/where appropriate) so people would know why the post was edited. For small edits, just a few words should suffice. The time stamp is also updated at the bottom of the post after a post is edited (same place where the “Reason for Editing” is put).