After the elemination of the Yahoo Geocities, yahoo.com concentrates on other yahoo sites and they give more prefference to reach the each and every need of an unic user.
At first Yahoo made changes to its home page it may customised to your needs on the web. It is like igoogle, but the main difference is yahoo give importence to the more userfriendly. find the yahoo's new design at http://m.www.yahoo.com/