.uno is one of the extensions particularly aiming at the Spanish speaking market, although the Italian language also knows the word 'uno' in exactly the same meaning: one, the first, the best. Of all Spanish extensions this is the shortest one and the most generic. It allows for commercial use as well as for private use.
A .uno domain reaches not only Italy and Spain, but also the vast continent of Latin-America. On top of that, do not forget the huge number of Americans having Spanish as their native language. And be honest: whether you speak Spanish or another language, 'uno' just sounds great.
A .uno domain is free of any restrictions: everyone can register his .uno domain and use it instantly. However, the primary market will remain the Spanish speaking countries, as we see in the slogan ".uno es el internet español".