I'm curious to know if the United States utilizes Luno as a platform for cryptocurrency transactions. As a cryptocurrency and finance practitioner, I'm always on the lookout for popular and reputable exchanges that cater to various regions. Given Luno's reputation and global reach, I'm wondering if American users can take advantage of its services. Can you provide some insight on whether the USA is among the countries where Luno operates and if there are any restrictions or limitations for users in the States?