And that, is an emoticon. The use of keys in a way that is different and fun is a way to express your feelings over the net. It can be difficult to convey your feelings over text, and sideways faces and the like help in displaying how you feel. At the end of every URL there is a a domain name. For educational sites the suffix is .edu, for governmental sites .gov, for organizations .org, and the list goes on.
Many nations have their own domain names, and there are more being created every day.
Just as the telephone company needs to create new area codes as all the numbers are being used up, as domain names get gobbled up by the growing number of people online, new domain names have to be added. Soon .la for Los Angeles will be an option.