[sten]

I can't tell from that statement whether just viewing images via the WWW would be "possession," or whether it's referring to the servers hosting the images.

technically, once you pull the image from the remote web server, it gets cached to your local disk. at that point, you are in possession of the material.

[John Jorsett]

If that was the test, you could get a lot of people in trouble by causing their browsers to cache images that aren't displayed to the user. They'd never know it was there until the cops kicked in their doors and searched their computers.