Three BBC articles related to Wikipedia blackout:
1) "Wikipedia joins blackout protest at US anti-piracy moves"
http://www.bbc.co.uk/news/technology-16590585
2) "Wikipedia - what can it tell us about Sopa?"
http://www.bbc.co.uk/news/technology-16609057
3) "Without Wikipedia, where can you get your facts?"
http://www.bbc.co.uk/news/magazine-16601517
All BBC News, 18 January 2012.
Carcharoth