Yahoo! 360 is now closed and blogs and connections on the Yahoo! 360 is no longer available. Yahoo provided an easy migration option from Yahoo 360 to Yahoo profiles. Yahoo also provided options to download your blog on your machine or move it to a different website like work press. If you have a blog or Yahoo 360 account you will need to do it before August 19, 2009.
I just finished migrating my Yahoo 360 blog to Yahoo Profiles. BTW Yahoo Profiles looks good and they have some good features like connectivity with twitter and other services. Check it out.