It seems to me that more people are working on the weekends than before. On the other hand, a lot of people don't seem to be working during the week, so maybe it balances out.
If this were a poll, I'd imagine the early results might be biased. Though not quite as much as a poll entitled, "Do you check IPVM on the weekend?". That one would be almost guaranteed to be near 100%, for a couple days. :)