Twitter lifts the character limit on direct messages while the standard Twitter Tweet limit sticks to 140. This update is coming in waves, so don't expect to be able to send a constitutional amendment to your best friend in a DM just yet. You might have to wait until the entire system is updated, which may take a few days. For those lucky enough to be allowed to send longer DMs, the world is now yours. Converse as long as you wish without having to limit yourself to the tyranny of 140 characters or less.