Updated Directory: While you are on your personalized page, check out the new Directory items under the Add Stuff link. We've reorganized and added new feeds from a wider variety of business, technology, and entertainent sources. In addition, new collections have been added to the Windows Live > Collections folder for Business, Technology, and US Politics.
Advanced options let's you search for feeds, add a gadget by url, subscribe to a feed by url and import and and export OPML file. My Stuff will show all things you've added to your personalized page, you can rename, delete and preview them from that panel too. Once you signed in you will also get Send to mobile next to My Stuff:
When you sign up for Windows Live Mobile services or try to send a link to your mobile device from a web page and you are outside your country, click the accompanying link on the number entry screen to choose another country or region, and then select your location from the list.
If you do not see your country or region in the list (I only saw Japan, United Kingdom and United States in there at the time I wrote this), Windows Live Mobile services may not be able to deliver text messages in your country. However, you may be able to access Windows Live Mobile by opening the browser on your mobile device and then typing http://mobile.live.com.