It would be helpful if Twitter supported the deletion of Direct Messages for all parties, as they do with public tweets. Right now, they just sit around in at l

It would be helpful if Twitter supported the deletion of Direct Messages for all parties, as they do with public tweets. Right now, they just sit around in at least one party's inbox and accumulate, creating a valuable cache of private information. (Twitter's implementation of Direct Messaging aligns more closely with instant messaging than email, therefore I believe a real deletion feature isn't an unreasonable expectation or ask.)