Really? I guess I didn't realize that forum was off limits for some members. This is the type of question that gets posted there fairly often. So to answer the question, there is no answer. It's up to the mods. In order to edit posts you need to be a contributing member. Donate to the website via the "Contribute" link at the bottom of the page. But that's not always enough. Only worthy posters are given the status. Some people donate but don't get the privilege. It's at Clutch's discretion.
To edit post is kind of unknown. You have to become a contributing member by donating money but I don't know how much. I've donated money and I'm still just a member. Most recently I've donated $20 after we signed Howard; I was impressed that the site didn't crash.