OK, last comment. She's using Wordpress, so the pages are being generated using that infrastructure. I was just questioning the supposition that the artist used question marks in the URLs for aesthetic reasons. But now this thread is becoming a technical analysis and we should be focusing on her art, which is great.
Right. I guess Rhizome was a bad example to compare to.
LOL! FYI the question mark is simply PHP for passing variables in the URL. Even Rhizome's website uses them. BTW I love the art!