Cisco has published its 2014 Visual Networking Index (VNI) forecast, which reveals that consumer Internet traffic has grown from 26,213 PetaBytes in 2012 to 29,071PB at the end of 2013 (excluding business traffic) and, fuelled by a +29% annual growth in online video content, it’s expected to hit 83,298PB by 2018. But the predictions may not be reliable.