O'Reilly Advocating del.icio.us?

I’m a big del.icio.us fan, it’s saved me storing my bookmarks in three different formats and provides easy access from anywhere; all for free. I was however surprised to see “Bookmark with del.icio.us” links in the articles on both O’Reilly’s ONLamp and perl.com sites. Still anything that gets the service more exposure can’t be a bad thing.