Well, we have one month and a week or so before mark can just tear into the code like a bat out of hell and I think paid features will spike dramatically then. So maybe in a few months things like that will be safer to open up to free accounts. (I think the comment editing is a nice touch but less of an issue--before comment editing ever came around I was quite adept at the delete-report rigmarole. Email posting in some instances has very little equivalent yet, although Posterous can definitely fill the gap.)