I just got alerted to this OMG EXCLUSIVE OMG story at Branchez-Vous, which claims that 1 in 4 francophone Quebecers over 18 is on Facebook, and that number goes up to 54% when you limit it to adults 18-24.
Those numbers seemed suspiciously high to me, especially since before this week Facebook was an English website and therefore its reach in Quebec was lower than the rest of Canada.
Then I came across this:
Ce sondage a été effectué en ligne auprès de 1257 répondants du 11 au 15 février 2008. Sa marge d'erreur est de 2,8%.
So this was an online survey. Not only does that outright dismiss the non-trivial (albeit dwindling) portion of Quebecers without regular Internet access, but online surveys are notoriously unreliable. More importantly, it wouldn't take a rocket scientist to conclude that those willing to take online surveys are more likely to have the kind of free time to waste online that would make them more likely to be members of Facebook in the first place.
So take those results with a grain of salt.