How deep could this thread go before someone points out that there's no use for the coin?
That's not true!
Litecoin, and other scrypt coins are absolutely useless.
Primecoin finds prime numbers, which can be useful for science. It also verifies blocks faster than SHA.
Even though I agree with you in spirit, I highly doubt this coin is going to prove useful to science. It isn't even finding the largest prime numbers, FYI. It's finding prime numbers. Period. It can be used in several places, but hardly for the advancement of science.