Last night someone (I think it was Jill) posted the address of this website. What does it actually mean when a chip is listed here? Does it mean that the chip is going to be made or is it just a possiblity?

There are a couple of chips on there that I would love to find out about:

Indian Springs Casino Ind 04/09/03 5.00 Area 51 Sound Test, Red
Pahrump Nugget PAH 04/03/03 5.00 2003 Halloween Chip
Hard Rock LV 12/19/02 25.00 Over The Moon By Midnight

Any help would be appreciated