This isn't a laughing matter.
Now suppose that I am sitting in the House of Commons, that I note someone's absence and keep that in mind. At present, it is legal to transmit that information once I have exited the House. Who is to say that the message cannot be sent from within the House? When he took his BlackBerry, wrote a message and Twittered it, he was sitting in the House. Besides, the hour is indicated on the message. He did that on the spot, as if he had exited the House and said so publicly. That goes against the Standing Orders. He makes accusations while sitting in the House. If he is in the House of Commons and makes those accusations during debate, it is as if he had gotten up and said so publicly.