AbigailII: Okay, thanks, thats kind of what i thought.

It seems at first glance to tell us something more than it really does. For example, Fencers comment about making this a Danish language site (I now he was only jesting) because at first glance it seems like these statistics show a lot of Danish speaking users. But in reality, if there are only 4 dutch speakers registered ever, and 3 of them have logged on in the past 7 days, then you will get a 75% statistic in your calculations.

So it is likely that a language with many many registered users, English, will have a better chance at a lower percentage than one with only a few registered users, correct?

So if you have 10000 registered English speakers, and 1000 of them have logged on in the past week, you will have a 10% calculation for English, and using the example above, you can have 3 users log on for a 75% calculation, so these stats dont really tell us anything about the most common language or anything that would cause fencer to switch the main language of this site, or anything like that!