Del.icio.us fans worldwide are in shock today with the news that Yahoo has decided to terminate the site, along with Altavista, MyBlogLog, AllTheWeb, Yahoo! Bookmarks and Yahoo! Picks and Yahoo! Buzz.

News broke on TechCrunch this morning after a leaked slide from an internal Yahoo! product team meeting fell into the hands of Eric Marcoullier, who co-founded blog social network MyBlogLog. It has since been removed from YFrog, but the slide depicts three columns titled Sunset / Merge / Make Feature with Del.icio.us, Altavista, MyBlogLog, Yahoo! Bookmarks, AllTheWeb, Yahoo! Picks and Yahoo! Buzz listed under the not so subtle *Sunset* column.

Marcoullier tweeted the slide from his account and then all hell broke loose, with Yahoo Product Manager Blake Irving even threatening to fire whomever leaked the slide.

Del.icio.us fans in particular have been very vocal about the news, voicing their opposition to Yahoo’s decision using Twitter hashtags such as #savedelicious and #delicious and even creating an online petition which can be *signed* by retweeting it. Ironically, many of the top bookmarks at Delicious today featured it’s demise.

The product terminations come the same week Yahoo! announced layoffs for 4 percent of its global staff.

Spread the joy!