There's been plenty of cynicism about Black Friday's growing presence in the UK:
Black Friday is a thing in the UK now too? When did this happen? Why embrace a day that sounds like curse? #blackfriday— John Owens (@JohnOwens86) November 28, 2014
While others have got more than they bargained for:
Woman on the news: 'I only popped in for some carrots and left with an LED TV, sound system and a smartphone!' #BlackFriday— Jeremy Mountain (@TheRealJeremyM) November 28, 2014
But it's not all about the bargains - NASA is attempting to comandeer the day with talk of black holes:
And others are trying to counter the phenomenon with #GivingTuesday, where people are encouraged to volunteer or donate to charity on Tuesday 2 December.
I think we should all look to #GivingTuesday and try to salvage something good from the scenes over the past 24 hours.— Amanda Coleman (@amandacomms) November 28, 2014
Perhaps the most inoffensive response is from the National Trust, which just want people to enjoy some colour today: