Re: Disable tiki-send_blog_post.php for the Anonymous group?
no idea myself. If it looks a bug or something that can be enhanced (you even propose the solution for on of your items), post it at:
http://dev.tikiwiki.org/tracker5
if you don't get enough feedback here about this issue, you can find more coders on irc:
http://tikiwiki.org/ConnectingToIrc
HTH