I would argue that in a conversation about app store rejection policies and specifically Google Voice that someone informing us that they have never heard of it wasn't doing much more than adding noise.
To anyone who has heard of Google Voice it's pretty clear that it's valid to put it forward as a innovative product. The level to which it's failed to permeated the broader public consciousness doesn't count against it at this stage in it's existence.
I'd say your response added just as much noise and introduced a degree of intolerance not necessary to the conversation. Let the non-helpful comments die a silent lonely death, no need to get haughty about it.
