Vinhos was rated 8.18 on BGG! what a joke. Ok, that gives serious credibility on the accuracy of BGG ratings, although all rating systems has to some degree, prone to zealots, game proponents, and fallacies of opinion. Then again what does 8.18 mean? I tend to think 8.18 stands for how much fun the game can be, overall game playability and game mechanics. Or I tend to think it's the overall rating of # of people who played (likes the game vs dislikes the game). The problem is that more people who dislike the game, probably wouldn't rate the game either, so clearly the distribution is skewed. Assuming the other games also has the same distribution margin of error, then the scale of BGG can be a huge swing of +- by a factor of 2!