In the case of repost failure, a warning message embedded inside the HTML repost is sent to the user. A repost failure is marked as a warning, not an error. A program that only checks for errors, such as WebPost, is not aware that the repost failed. If the repost succeeds, anything returned from the repost is sent back to the client. The acceptor then becomes transparent, meaning that it does not send anything back on its own. If no content is returned from the repost, the acceptor sends a warning message back to the client.