Let's say I wanted to register booked.co (I don't really) when a company called Bookco has a registered trademark and has an online presence at Bookco.com or other extension. It's close, but is it close enough to raise an eyebrow? If my site is about booking agents, for example, and Bookco is about books one reads, am I safe? It's the best example I can come up with. Assume those are the words. :?: