1 single reason I still love it. Awesome sidebar plugin in Firefox. I never ever visit the site itself - Robert

Easiest way I've found to share bookmarks between FireFox, IE, anything else; also integrated into FF/FB so I can share with others - John Schroeder

Yes I do. 2 desktops, 2 laptops, each having couple of browsers. Delicious is the best way to keep my bookmarks in one place. - Tapio Kulmala

Facebook and Twitter are horribly noisy places to store bookmarks!? They don't have proper tagging, and lack ANY integration with your browser. Finding a bookmark on FB is painful by comparison, nevermind finding ALL of your bookmarks about a specific topic. - Joel Bennett

I stopped using delicious and went with Diigo, then stopped using Diigo; I'm now using Selfmarks (anti-social bookmarking) for all my bookmarks. http://sm.purepistos.net/about - Pistos

@Pistos For me, it's all about the delicious firefox plugin. Gotta beat that. - Joel Bennett

Not sure what I need a plugin for; I search, I click on a result. What does the plugin do? - Pistos

As I mentioned on Twitter: delicious.com is still useful for reference material, such as an interesting library. Shared items are more ephemeral, and most of the time targeted at friends/contacts. - Olivier Tharan

I have bookmarks in Delicious going back to 2004. I can still dig them up thanks to decent search and tagging. My bookmarks have descriptions and identifying quotes that are much longer than 140 characters. None of the sites you've named can give me that. - Adewale Oshineye

As others have said, Twitter may be good for sharing/broadcast but it's atrocious for archival/storage - no tags, no rich description, and you can't even find anything more than about 100 posts ago without using a hack to get around the infinite page more mechanism. - Paul Mison