I am in agreement with poster #2 about the "edit" button for questions. Often, I answer a question quickly and later think of something else or a better way to say what I wanted to, or I just notice that I left out a letter on a word or a punctuation mark while typing which makes you look unprofessional and not attentive to details. I would love to have that button back, but it has been explained to me that many were just writing a few words (sometimes without really making sense) to get the money credited to the account and then going back to edit the answer when they had more time. Sometimes, the editing was not completed, and reviewers had to revoke payment, answers, and send form letters to the offenders.
Luckily, there is now the "claim the question" button so you can take your time to answer at your leisure, doublecheck for misspellings, mistypings, and other usage errors before hitting the "submit" button without the fear of being sniped for the pay.
I have seen, on occasion, where a discussion posted twice when I hit "submit" only once. That is when I would have liked to "delete" one of the posts, but this is something only a review editor has the power to do.