I'm always catching myself crossing my eyes slightly when looking at these. You almost get a 3D magic eye sort of effect happening on some of them. I hope it's not the onset of some mental condition or something.
Na, I do the same... i was very much into stereograms when they started showing up all over in the 80's...made a few myself back then....since i often go cross eyed when i look at stuff
That's because i render them to be looked at big...for people to travel in them