Twitter and safety

I have written before about how Twitter has made me feel safer in potentially risky situations and I had another example of it today.

I was walking through London and there seemed to be significantly more people walking on the pavements and the traffic was at a standstill. I am genuinely not worried about terrorism and have no fear of the power of nightmares but it occurred to me that there might have been an incident. I thought of checking the BBC News web site but guess what I checked first, as potentially being quicker if not - perish the thought - more reliable? Yep - Twitter.