Twitter is a very popular and major online social networking site that offers a free service which enables users to send and read very short 140-character messages called "tweets". Only registered users can broadcast a tweet, unregistered users may read them only. Users can access Twitter via the desktop website interface or via SMS or their mobile device application. Tweets use hashtags which act like a meta tag, used to direct and tag tweets as #keyword.
Is twitter down right now?
twitter Outage Reports from last 24 hours