Following this week's furore over Facebook lifting its ban on videos showing decapitations and other violent images, the social network has now said it will include a warning messages on the videos.

The alert will state 'Warning! This video contains extremely graphic content and may be upsetting'.

The announcement comes following a tweet sent by UK PM David Cameron labelling Facebook "irresponsible", and calling on the site to "explain their actions to worried parents."

Next on Cameron's hit-list is the big six energy companies that have one-by-one been raising their prices by around 10% over the last week - he's demanding that they explain their actions to worried parents urging them to include the warning on price-hike letters: "Warning! This letter contains a violent assault on your standard of living and will be upsetting - your choice is to either like it, or be forced to choose feeding your kids over keeping them warm".

Cameron Tweets, satisfied with his contribution to society: "Guys! Just make them wear a jumper! Lol, DC out x"

  • Politics. Done.

Next: convicted hackers could potentially be used in the UK's cyber defence unit, causing uproar among some who believe that by offering these roles it is less like leaving the back door open, but opening the front door and hanging a sign that says Santa's grotto over the door frame. However, in reality, the cyber defence unit is employing I highly sophisticated double bluff in which a group of hackers that no longer need to keep their skills honed will become as useful as a Rottweiler without its teeth. Or feet.

One country's health destructing atmosphere is a Dutchman's crazy business idea, as the saying goes. China's smog-laden sky is being recycled to fuel the concept of a Dutch design studio. Studio Roosegaarde is looking to grab the pollution hovering over Beijing using a balloon and some copper coils (it's all a bit Blue Peter) so that it can then reutilise the smog particles into saleable products. "I would do something with the smog, not throw it away, but make designs that people could purchase," said studio founder Daan Roosegaarde. "I would love to condense all that smog and compress it in a ring. Or make it into a precious thing."

  • Sexual Harassment Panda: cleaning up the smog makes him a sad panda

In related news, film director Peter Jackson has responded to the news having started working on the script to Lord of the Rings 4: That time that weird Gollum guy solved climate change thanks to a surprisingly positive outcome from his bizarre and quite frankly tedious obsession with jewellery. Title could use some work...

Actually, scratch that, it's perfect.

As if the Philadelphia Experiment wasn't enough, now professors at the University of Porto in Portugal are trying to make things disappear. Kind of, anyway - they're actually developing a new augmented reality system that aims to help safe overtaking on roads. The 'See-Through System' provides a display that affectively renders a vehicle invisible, allowing you to see if it's safe to overtake.

Unsurprisingly, a few people are concerned. Hannes Kaufmann of the Vienna University of Technology in Austria says it's a "double-edged sword" and wonders: "what if the image transmission stutters?"

I would have to say, I'd be more willing to place trust in an academic from Vienna that a team of professors that have clearly been rolling around drunk on the devil's drink in the city's many port cellars. But xenophobia aside, I've been to Porto. That place is basically hills and a big river. If this technology safely makes it out of the country, well, it's proof that we could all toast to that and nothing bad would happen. No, no, mine's a gin - I don't want that putrid wine syrup fermentation near me, thank you very much.