I think for now the best think to work on would be credibility and reputation. Maybe including a commentary with the release of the week's numbers.
Also I think the site could benefit from a bit of transparency, not giving away sources or extrapolation techniques but statements on number correcting or if you don't have enough data on a title so it cannot be tracked properly. When the site is mentioned there are often a number of detractors, so going some way to quiet their arguements would be a big step.
It's always good to see vgchartz featured or quoted in newspapers, perhaps contacts could be built and the site could gain more recognition that way, I'm sure that would be a good way of building a reputation.







