Bookmarking with del.icio.us
I created an account on del.icio.us and installed the two buttons. And it automatically grabbed Berman Collection - a photoset on Flickr and added to my "del.icio.us" button. So it seems that there is some internal linkage between del.icio.us and Flickr.
Then I did a search in del.icio.us for "scenic spots in duluth mn" and the search results showed up in Yahoo! So del.icio.us seems to use Yahoo's search engine.
I used the "TAG" button to bookmark a webpage (http://www.superiortrails.com/duluth-hawk-ridge.html) and it shows up under my "del.icio.us" button.