Comment Previews & Deletions

I hope this hasn't been requested a million times... LOL. I know how some things can get repetative.

I am just popping in to make a suggestion. Would it be possible to fix it so that we could preview a comment post to someone's page before we actually post it? I posted a pic that didn't work and the error ended up in my post. If we could preview before posting comments that would be cool. Or maybe it can be worked out to where we have some time to delete a comment that we put on someone else's page in case an error occurs in the post, and then we can repost the comment with a new graphic or whatever needs fixing.

Is this possible at all, or something we can look for in the future?

PS - Forgive me if we can already do this and I am missing it. :-p

Blessings,
Macha