According to a message on the Buzz website: Yahoo! Buzz will be discontinued as of April 21, 2011. As of this date, you will be unable to access the Yahoo! Buzz site. This was a hard decision. However this will help us focus on our core strengths and new innovations. We appreciate your patronage. The Yahoo! Buzz Team.
Buzz launched to the public in 2008 as a Digg-like site to aggregate what news stories are ‘buzzing’ on the web. It never really took off and clearly Yahoo felt that it was no longer worth maintaining.
We originally heard that Yahoo was “sunsetting” Buzz back in December, as well as Delicious, AltaVista, MyBlogLog, Yahoo! Bookmarks, Yahoo! Picks, and AlltheWeb. Of course, while we all assumed “sunsetting” referred to shutting these products down completely, Yahoo eventually publicly stated that it was looking to find a new home for bookmarking service Delicious, ensuring its survival for now.