Want to receive direct messages (DMs) from any random Twitter users, whether you follow them or not? That option didn't previously exist for most Twitter accounts, but a Monday announcement confirmed that the service is overhauling its DM access in two interesting ways—and one of those, in its current implementation, has more privacy implications than are apparent at first glance. The most obvious change, as explained on Twitter's help site, is a toggle that users can enable if they wish to receive DMs from anybody.