AND, I also meant to say #FactsWithoutWikipedia is trending in the UK.
This user is cataloguing Wikipedia-related tweets of people that seem to lack basic skills in reading/comprehension (not realising it's just for 24 hours for example)... many tweeting "RIP Wikipedia"!:
https://twitter.com/#!/herpderpedia
Anyway, sorry, I've made rather a pig's ear of what was meant to be some light coverage of UK Twitter responses to the blackout. I shall post no more on the subject.