Dunno. .co suffixes are supposed to be for Columbia, land of Shakira girls.
Pero, me gusta silkcoin.co tambien. Y me encanta Shakira.

We now have a variety of domain choices locked in for one year. We have many options in the coming months where one or more might come in handy. I also saw that silkcoinbank.com and silkcoinmining.com were available. Things that make me go, "Hmmmmmm." silkcointalk.com?
We have them if we need them.
Silkcoin.com .net .info and .org will expire on June 21, 2015. It would be to our benefit for those domains to be placed on backorder. Probably need a bounty on those as that will cost between $20 tp $50 each to place on backorder for auction, depending on which domain company is used fir purchase. Silk-coin.com expires in April 2005, as well.
Should trademark and tradename also be considered? I would think, yes.