A very interesting ‘webcast’ on what could be named “Filter bubbles”, it is an interesting observation on how Google and Facebook automatically filter certain information away for you (all in good faith I hope, but still)..  Your search on “Egypt” may thus bring very different results than the same search done on a friends computer, good or bad?  well it is hard to tell but it offers some scary prospects.  Take the 9 minuts and listen to this, it is interesting stuff.