On webmasterworld I saw one remark that today (Fri) has been one of their worst days traffic-wise and on another board whose name is rather profane, someone remarked that they're getting half the normal traffic. I wouldn't be surprised if some numbers for some of us will be off during the weekend.
well, duh... it is thanksgiving weekend.... thurs, fri, sat, sun. most people are on "vacation" or doing other stuff, while off from school or work...away from the comp.
there is like a billion internet users last i checked... and a large, actually the biggest of all...chunk is from the us. so anytime something goes on here in the states it's effect is on a global scale.
Absolutely, so when long weekends such as this one have a significant effect on their stats, they might not have immediate awareness of the holiday's impact. I'm sure they do now. [edit: holiday]