Looks like 3GS owners can't keep their fingers off their new video record feature.
According to YouTube, iPhone users were responsible for more than half of the mobile uploads to the site last week. When you take into account that YT is the world's biggest user-generated video site, that's pretty huge.
Uploads of mobile phone vids are up 400 percent per day since last Friday, when the new iPhone was released. And actually, cell phones in general are becoming a major vehicle for the website. In the last six months, uploads from cell phones have increased 1,700 percent.