Yahoo announced that its shut down their some products because these services have no more usage these days
Here is the list :
Yahoo! SMS Alerts : As of April 30 2013, Yahoo! SMS Alerts will be going away .If you are using this service , we encourage you to stay-up-date with Yahoo! News, Yahoo! Weather, Yahoo! Sports, or Yahoo! Finance.
Yahoo! Kids : Yahoo! Kids will e close on April 30 2013. Our youngest users who are under 13 can register for Yahoo! ID through Family Accounts program, connect with family and friends through Yahoo! Mail and Messenger, and check out upcoming family friendly films on Yahoo! Movies.
Yahoo! Mail and Messenger for J2ME phones : As of April 30, 2013, the Yahoo! Mail and Messenger apps for feature phones (J2ME) will be going away. They continue to support all applications for Apple , Windows and Android phones.
Yahoo! Deal : As of April 30,2013, Yahoo! Deal will be gone away.
Upcoming: As of April 30,2013, Upcoming will be gone away.