I'm really sorry that I had to take that feature away but don't forget, like Kris said, you can always modify your post if you didn't want it to appear the way it did.
Just change the subject line to something like, "oops, I didn't want to post this," then delete everything you typed and say the same thing about not wanting to post something, but only if no one else has responded to your post.
Don't forget too that some people can opt to have certain post sent directly to their in box so even a post that ends up getting deleted, will still have been sent to someone's in box so someone could have read something you didn't want to say.
It's always best to think about what you want to say before you type it and if you think you're saying something that could get taken the wrong way, read it over before hitting send.
Sheryl