Being a long time reader of this site (since 2007ish) I don't have a problem with the numbers being somewhat off. It is expected that a margin of error exist for a site that tries to gauge what a product sells in a market without having all of the data. However, the fact that number updates are so far behind and sporadic has been very detrimental to this site considering its very purpose is built around those numbers. Without that we have a forum, and while the community isn't terrible, there are better places for news and discussions. Here's hoping something is fixed soon, whether that be removing numbers altogether or catching up because it looks really dire right now.
To be fair, and I'm not defending ioi as I don't agree with this late method of his, we've had much longer delays (I believe the longest was 2 months and a few weeks?). I remember when I found this site in 2011 and was amazed that the numbers were updated so often (usually once a week/every other week)