All companies have a dead pixel policy, but they vary from one manufacturer to another.
to be honest, i recently bought a Formac Gallery Xtreme-3 1900 P-MVA monitor (review coming soon), and it has 1 dead pixel (permanently black) and i am VERY sensative to these things, (by nature, and by profession) and i was pretty gutted at first. Three days later... i couldnt care less, i have to really look for it to see it, and i never notice it when i'm doing anything other than trying to find the dead pixel.
now if it was always white, or blue or something, that would be a different matter i think.