[_vxw6]

Forgive me if I don't understand, but I don't think there's a problem with multiple companies using the same common noun as the base for their domain.

Let the best product be remembered for the name.

[metaphor]

Certainly not, presuming it doesn't escalate to the level of trademark/service mark infringement (to be fair, IANAL). Just a risk consideration...your product, your call.

But I think there's value in at least recognizing that the namespace is quite crowded given the collisions that two interweb randoms were able to identify in short order.