As was speculated long time back that Yahoo! might be closing its bookmark service MyWeb after it acquired Delicious, it is announced over MyWeb now. Here is the notice displayed on landing page of Yahoo! MyWeb –
We are streamlining our bookmark services. As part of this effort Yahoo! will be shutting down MyWeb on March 18, 2009 and moving users to Yahoo! Bookmarks. Your MyWeb bookmarks are already available to you on Yahoo! Bookmarks. You can begin using this new service now or continue using MyWeb until the shutdown date. Learn more.
Yahoo! Bookmarks can be used for keeping bookmarks private or the bookmarks can be shared over delicious after migrating the MyWeb bookmarks. You can also take advantage of different bookmarking tools/extensions available over delicious as well. For bringing your Yahoo! MyWeb bookmarks to delicious, first you will need to export your MyWeb bookmarks in xml format and then import that xml file in delicious.
It is really sorry to see a beta service being closed over Yahoo! which many might have not thought of.