Posts disappear . . . where do they go?

Under Travel Help a person named "Simmie" just asked about handicapped transportation from Metz to LaRochelle. It was listed as being posted May 14 although it is currently May 13 (3:12 PM Pacific time).

At any rate, I replied, hit "Done" and the entire thread simply disappeared. Is it out in cyberspace or are you now reviewing posts before they go up?

Just curious.