Click to viewThe pace of of product launches from Yahoo is breathless — and with a whiff of desperation. On February 26, Yahoo plans to beta launch Yahoo Buzz as a competitor to Digg, and a tipster supplied Valleywag with screenshots. Buzz, built under the direction of VP Tapan Bhat, will begin with a limited number of publishers — about 100 — and will rank stories based on popular search results and user voting. By summer, Buzz will open to the entire Yahoo Publisher Network. In other words, if you let Yahoo sell ads on your site, it will allow your stories to appear on Buzz. Word is Yahoo plans to launch the site on buzz.yahoo.com, which currently tracks popular search results. Pics or it didn't happen? See the screenshots, below.