I originally saw it online but it was out of stock. I found it in the Mac section at Microcenter and decided to buy it ($40). It looked like it might be a cool looking translucent ball to mount on a CP.
It worked great in Win2k and I played Centipede with it to give it a try in Mame. Everything worked good. There was the common backspin when you use a pc trackball in Mame, but it wasn't bad.
Anyway... as recommended on this site, I just decided that I would go with an arcade trackball from Happ. I returned the iball to Microcenter and put the issue to rest. Well, yesterday my order for 15 trackballs from Outpost.com went through. I guess I may reconsider using this in a CP. Basically, I don't play alot of trackball games, but I would like to have one on my cp for my limited trackball play as well as Windows navigation. Durability isn't a problem if I keep an extra 5 around for parts.
Anyway, it seemed like this trackball might be a good trackball, or a good hackable device to build a spinner, or possibly something to hack as an interface for a arcade trackball. I didn't receive my order yet, so I may know more when I get it.