Facebook's now been around for five years, but will it still be around in five years' time? There's a long and a short answer to that question. The short answer is yes. A website, operating at www.facebook.com, will still be going in five years. That, assuming the internet survives the next five years, is a given. But will it still be the cultural force that it is today - 150 million users worldwide, twice the size of its nearest competitor, leading to academic misconduct, arrests, multiple lawsuits, house-trashings and viruses? I suspect the answer might be no. Click over the jump to find out why.