According to Irish Rail today's delay on the northern line was caused by a signal failure but this was not the only failure Irish Rail encountered - they also suffered a social media public relations failure.
We've heard some reports in the last hour that the new Facebook messaging system has started rolling out to some users. We reported on the system in November of last year when it was first announced. Essentially it's a simple communication tool that integrates many different formats including email, chat, and SMS.
Today Facebook unveiled their new “modern messaging system” that promises simpler real-time communication across any medium or device. Speaking at the press event in San Francisco Mark Zuckerberg, Facebook CEO, is quick to confirm that this is “not an email killer”, but “a messaging experience that includes email as one part of it”.