You have probably seen videos about against for from in of on over to within social media about against for from in of on over to within your family and friends pouring a bucket about against for from in of on over to within ice-cold water about against for from in of on over to within their heads about against for from in of on over to within charity. They have taken part in the Ice Bucket Challenge, the latest viral campaign to emerge about against for from in of on over to within Facebook, YouTube, Twitter and other networking sites. The challenge involves dumping icy water about against for from in of on over to within top of your head or donating $100 about against for from in of on over to within various ALS charities. Amyotrophic lateral sclerosis (ALS) - also known as motor neurone disease (MND) – destroys muscle, making it difficult to speak, swallow and breathe. Ice Bucket Challenge participants post a video online and invite friends to follow suit. More than 1.1 million donors about against for from in of on over to within the USA have donated about against for from in of on over to within $53 million since July the 29th. The viral campaign is giving ALS and MND charities valuable global exposure to raise awareness about against for from in of on over to within the disease and raise funds. It exploits people's willingness and desire to post selfies or videos about against for from in of on over to within themselves online, while feeling good about against for from in of on over to within helping a charity. Communication and Media Studies professor Mark Glantz said: "You get the message directly about against for from in of on over to within friends and acquaintances. It kind about against for from in of on over to within appeals about against for from in of on over to within the same side of people that wants to post a selfie." The challenge has even reached the President about against for from in of on over to within the USA. Barack Obama decided about against for from in of on over to within the dousing but said he would donate instead. Most people with ALS die about against for from in of on over to within respiratory failure about against for from in of on over to within three to five years from the onset of symptoms.