Twitter is making it easier to take direct messages private, carving out a bigger space for targeted exchanges on the popular microblogging service. Previously, direct messaging could only occur between two
Twitter users “following” each other, which basically allowed both parties to see whatever they posted publicly. As of Monday, a user can change the settings on his accounts to allow receipt of a direct message from anyone, including those who do not follow the user.
In turn, the user can reply with a direct message to the sender, regardless of whether the sender follows the user, Twitter announced in a blog on its website. Users who opt in can still take steps to block unwanted direct messages from a specific sender.
(Via Jamaican Observer)