After an unspectacular run at Yahoo, Delicious, a social bookmarking service, has found a new home.

On Wednesday, the YouTube co-founders Chad Hurley and Steve Chen announced the purchase of Delicious, which will become part of their new Internet company, AVOS.

“We’re excited to work with this fantastic community and take Delicious to the next level,” Mr. Hurley, the chief executive of AVOS, said in a statement. “We see a tremendous opportunity to simplify the way users save and share content they discover anywhere on the Web.”

The price of the sale was not disclosed.

For Mr. Hurley and Mr. Chen, who co-founded YouTube in 2005 and sold it to Google about a year later for $1.65 billion, it is a return to the start-up culture.

AVOS is based in San Mateo, Calif., just blocks from YouTube’s original office. Before founding YouTube, Mr. Hurley and Mr. Chen were both early employees at PayPal, which was later sold to eBay for $1.5 billion in 2002.

The sale of Delicious, purchased by Yahoo in 2005, reflects Yahoo’s mixed record with acquisitions. After several years of disappointing growth, Yahoo announced in December that it was looking for a buyer for Delicious.

“While we have determined that there is not a strategic fit at Yahoo!, we believe there is an ideal home for Delicious outside of the company where it can be resourced to the level where it can be competitive,” the company said in a blog post.

Earlier this year, Yahoo also announced that it was shuttering MyBlogLog, a company acquired in 2007 for roughly $10 million.

See Verne G. Kopytoff’s report on the Delicious acquisition on the Bits blog.