Hi,
No doubt it changed. The main changes, as I see it, are: The volume of questions increased dramatically (about 10 times as much as it used to be). Much more questions about trouble shooting redarding: computers, fishing, and home maintainance. I have the feeling that the average age went down and there are many basic questions about sex. And the vast majority of the questions are from North America.... (it used to be much more "international"). My answer is not based on statistics or research but on my feelings.
Best regards,