I've noticed that when I make a post, and try to edit it immediately (I'm not as careful a typist as I should be) I get an error message telling me that I can't post again so soon, but have to wait an unspecified amount of time before editting.
Obviously I could and should type and proofread more carefully. I wonder though if the time-delay feature serves any practical purpose, given that no-one can post on the board without first being approved by the moderator. Flooding shouldn't be a problem.