del.icio.us

I love del.icio.us. I have been using it since I heard of it in preparing for the 23 Things Technology Petting Zoo. I love the way you can import the little bookmarklets for "post to del.icio.us" and "my del.icio.us" right in your toolbar and click on them when you find a new bookmark. I also like the way that del.icio.us gets into your right-click menu once you have put the bookmarklets on to a computer or opened your del.icio.us account on a new computer. Try right-clicking on any web page once you have installed the buttons. The right-click feature is not available on mag.nolia or furl. I did a comparison of del.icio.us, ma.gnolia, and furl for the class in library school. Though furl might work better for tagging and sharing serious sites among the scholarly community, and ma.gnolia might have a more appealing visual design, both only offer tags made by those in groups within their sites/services that you have joined, while del.icio.us offers you suggested tags and suggested other sites from the entire del.idio.us community without joining anything except for del.icio.us itself. Del.icio.us also offers groups, it has the right-click option (the other two services have the bookmarklets, too), and it has the largest community of users. I like del.icio.us best, even though their "tag cloud" is just a deeper shade of pink for greater use of a tag or site.
I made this screencast with Jessica Goodman, using Camtasia, for a course I took called Social Software in Libraries for SJSU SLIS library school. We also put this in the 23Things hints page of the wiki. This was to be the first of three parts, but we never made the next two. The Common Craft video on the same wiki page is a better overview, but below you see ours, since this was partially my own work.

If you choose to use any of these social bookmarking services, you may find yourself ignoring your old one-computer-based bookmarks menu in favor of the social bookmarks that travel with you. I know I go first to del.icio.us and only then think of the dropdown bookmarks feature that came with the browser.