Yahoo! has bought del.icio.us according to the del.icio.us blog
We're proud to announce that del.icio.us has joined the Yahoo! family. Together we'll continue to improve how people discover, remember and share on the Internet, with a big emphasis on the power of community. We're excited to be working with the Yahoo! Search team - they definitely get social systems and their potential to change the web. (We're also excited to be joining our fraternal twin Flickr!)
From the Yahoo! Search Blog
As Joshua writes [above], the del.icio.us team will soon be working in close proximity to their fraternal twin, Flickr. And just like we've done with Flickr, we plan to give del.icio.us the resources, support, and room it needs to continue growing the service and community. Finally, don't be surprised if you see My Web and del.icio.us borrow a few ideas from each other in the future.
There are no figures disclosed at this time. Will update if they become available.