To answer the original post, .eu and .cc are both not great as far as popularity goes in the US. You're much better off with a .com .us .net .org .biz or .info. Americans can't even buy .eu unless they have some connection to Europe. .cc is available to anyone but not a popular extension. Even though .cc is really a country code domain, it's been marketed as a .com alternative and many registrars feature it when you do searches for domains, so it has some visibility. To ask if .eu or .cc will be more popular in the US is almost a question not worth asking. If you had to choose between the two, .cc would probably be better since it has no restrictions on registration. I've always thought .cc is a nice looking extension too, and there have been some .cc sales of $1,000 to $4,000 lately. If anything .cc is slowly gaining more popularity, but I think it's because of it's affordability in the aftermarket. A good .cc keyword can be gotten for a very reasonable price.