Did you know that today is #PositiveTwitterDay? In an effort to get a little camaraderie going on the 140-character network, a group of people are sending out messages of positivity in each tweet – and, like any online movement these days, a group of detractors are trolling.

Started by Sunder Katwala (@SunderSays), Director of the British Future organization, #PositiveTwitterDay is, in his words:

“a mere hashtag to promote civility, and a conversation about the culture of social media.”

Taken up by the likes of Guido Fawkes (@GuidoFawkes) – whose normally biting tweets are a bit mellowed out today – it’s making some waves on Twitter.

Most people are tweeting about the little things in life that make them happy, like a good breakfast or getting fit. But some #PositiveTwitterDay tweets are positively inspiring, like the mother who tweeted about taking her 6 month old to see the grandparents, five years after being told she could never have children.

But not all response to #PositiveTwitterDay is, er, positive. Here’s a sample of the kinds of things that Twitter users who are apparently against positivity are saying:

#PositiveTwitterDay is the worst thing on the internet.

— Alex Hern (@alexhern) August 31, 2012

Under the present economic and ideological conditions, none of us have any future #positivetwitterday

— Juliet Jacques (@julietjacques) August 31, 2012

And, of course, there are those who are just plain hilarious:

#positivetwitterday will wreck havoc on those indexes which use positive/ negative sentiment on twitter to predict movements in the markets

— Gillian Bowditch (@GillianBowditch) August 31, 2012

Protons! #PositiveTwitterDay

— Connor is a Swan (@NawsCon) August 31, 2012

Do you think movements like #PositiveTwitterDay could make our digital worlds a little bit better? Or are they encouraging fake sentiment and banality? Let us know your thoughts in the comments below.

(Hat tip: The Telegraph)