I think we should be able to ban users or at leaste remove pridictions like this:
http://www.vgchartz.com/predictions/entry.php?id=2262
http://www.vgchartz.com/predictions/entry.php?id=2263
http://www.vgchartz.com/predictions/entry.php?id=2264
http://www.vgchartz.com/predictions/entry.php?id=2265
They tottaly destroyes the average in the predictions.