12 Jan 2010 09:01
Hi vonny.
Thanks for your suggestion. This has been discussed a number of times in the past, but declined as it could lead to all sorts of complications. If you make a post and then need to clarify a point or rectify a typo, you can always post again. If you regret typing something, you can always report your own post for a Moderator to look at, and possibly remove.
Regards, Admin.