I decided that it would be useful to get the international domain name ag×a.com for Andrew Gilmartin & Associates. (I could not get "ag&a", "ag+a", "ag•a.com", or "ag†a.com" and there is no IDN for "№1".) I used the IDN Conversion Tool to get the ASCII version of the domain name "xn--aga-9ja.com" (this is the Punycode version). With this, I registered the name with GoDaddy. Neither 1and1.com nor Yahoo! support IDN just now. In a day or so I will have the domain forwarded to this blog.
Use the Unicode charts to concoct your own strange international domain name.
Oh, under Windows you need to type ALT-0215 to get the ×.