Interesting. Took me a little while to realise it wasn't random phrases. Then it became easier to read down the screen. I was discussing rollers and crawlers with someone just the other day. Crawlers are so much harder to read as your eyeballs can't stay still and let the text pass so you end up reading evreything over and over. Kind of like this I suppose.
futureofthebook.org/itinplace/archives/2008/01/to_see_sea.html