I can't see this becoming a thing. Just like the author points out, how would users type these in. At best, special symbols will only be useful outside the domain portion, but they still can't be a good idea. The good part might be that anyone who tries this will fail hard when no one can get to their site.
[+] [-] mcantrell|12 years ago|reply
[+] [-] donohoe|12 years ago|reply