I Have a Suggestion for Similar Worlds

Please make the time longer in which we can edit our responses to polls, stories and questions. Sometimes when reading back over my answer I need to add a detail or two, and can't touch type (I'm on an iPod) fast enough sometimes to add a detail or punctuation and spelling. ( I try to proof-read before answering anything, but from time to time I miss something.) I would be grateful if you did this.