I use Delicious for social bookmarking because I like to find sites later on. Honestly, for the first year or so of using Delicious, I never went back to actually find something later. But, more recently, I've been going back very often to find sites that I remember coming across a long time ago.

For example, today I was looking for a site that showed a snippet of text very large in many different fonts. I went to my delicious account and guessed at the tags I assigned to it: `tools` and `fonts`. I visited my Delicious bookmarks page for those two tags and re-discovered the site: flipping typical.

It's just a breathe of fresh air, because I would never have thought that 'flipping typical' would be the name of the site, and yet, there it is - I just re-discovered a useful site. When I discover some of these sites, it's through RSS or Twitter, and I don't have a use for them at the time, but I know I will want to re-discover them later.

Another common use is to share a wish list. Many people use Delicious tags to define what items they want. Many people use tags like 'wishlist' or 'iwant' for this.

Delicious is also good to discover amazing links from your friends. If you add friends to your network, you can then subscribe to your network to easily discover links your friends have found interesting.

Overall, I find it quite interesting and useful at the same time. The network aspect is quite useful because generally your network is full of extremely relevant links.
Source(s):
I love Delicious and use it everyday.

Permalink | Report

Social bookmarking submission has developed into a powerful tool for SEO experts. It involves linking sites within the various forums, blogs and message boards on social networking websites, blog sites and content centric sites like Digg. Considered a better alternative to submitting a website on blogs, manual social bookmarking is a simple, convenient and hassle-free way of making sure that your site is noticed and marketed in the right circle.

Google and other major search engines have decided to go content-centric; the more places you have your content, the more traffic you generate. Submitting your site manually with social bookmarking sites like Digg, blogthis!, orkut, and myspace will ensure a heavier volume of relevant traffic. Our constant endeavour is to serve sites with well-researched and well-directed traffic by our bookmarking submission.

Our team ensures that every site is first indexed for the intended target audience, so only sites with a suitable page rank and pedigree are selected. All links are strictly one-way and permanent. Our service is tuned in to the ever-changing world of search engine optimisation. With the implementation of context-sensitive search algorithms and with the advent of more personalised search results for users, submission of your site contents to a social bookmarking site is a no longer a matter of trial and error.

Each bookmarking site has its own pros and cons, and it takes meticulous planning and research before one can consider submitting his/her site content to a social bookmarking service. From the most basic press release to more complex articles, all site content is examined and then the appropriate site is determined for submission. To top it all, since all bookmarking sites require registration, there is no way that any spam links can be generated to or from your site.

Social bookmarking sites are search engine friendly and within seven days of submission, links start to appear in all major search engines. If you are serious about your sites Link Building, Ranking and Traffic... Social Bookmarking is a must.
Permalink | Report

I use Delicious as a "read it later" storage place. Gravity (Twitter client for S60 phones) has this feature to bookmark any link within a Tweet to Delicious. Since it's not quite pleasant to visit full websites on my phone, I usually will bookmark them to Delicious, then access it later from my PC.

I don't have any friends on these websites, so it's not quite "social" to me, more as a tool.
Permalink | Report

This answer has been voted unhelpful by users. Please click to view

It's very useful.
Hide

Permalink | Report

http://en.wikipedia.org/wiki/Social_Bookmarking

go this site..you will know the advantages and disadvantages of bookmarking.
hope it'll help!
Permalink | Report

I don´t know if I think they are so useful
Some time ago,I was using a lot of them beacuse I was writing for a site,and I was hoping for more views
No,I never got many visitors
Permalink | Report

I used to user Del.icio.us everyday, I was one of the most followed users according to the WSJ, they even interviewed me and featured me as an "influencer"

http://www.flickr.com/photos/33749589@N07/3717597263/

I found del.icio.us was a great way to "archive" my bookmarks, and it came in real handy when I needed to find a related article when I blogged daily.

I found I occasionally checked out other peoples bookmarks and occasionally met people with similar interests, but mostly it was for my personal collecting and archiving of great links. And there was always a chance that others would bookmark your work and it would end up going viral.
Source(s):
http://online.wsj.com/public/article/SB117106531769704150-zpK10wf4CJOB4IKoJ...

Permalink | Report

The main purpose of social bookmarking was to share links you found interesting with your friends WHILE keeping them organized for yourself.

As Twitter has exploded I've found that people have moved their link-sharring to Twitter. This means that bookmarking sites, which were always very niche, are even less important to the mass audience.

Delicious.com was the best one every built in terms of scale and features, but it seems to have been forgotten by Yahoo.
Permalink | Report

I just spent the last couple of years in school full time. I used to save my research and then tag by project or class. I could quickly point a teammate or professor to my list of links for a particular topic by sharing a custom tag. Posting my tag cloud on my class wiki was useful too.

In school I found myself working on many different public computers. Having my bookmarks on delicious was very convenient. Thank goodness I never really liked ma.gnolia.com. Those poor folks had some file/disk corruption problems and an incomplete backup process. They are still trying to come back.

I'm just now starting to subscribe to tags. Time to do some cleaning up of all my RSS subscriptions though. My google reader looking worse than my e-mail inbox.
Permalink | Report

I use it as a search engine for related ideas that may not use my keyword. Looking up Crowdsourcing will help you find websites that use a different word. Other people may know something is related even if google doesn't.
Permalink | Report

Well its very very useful, other than allowing access to your bookmarks(favorites) from anywhere rather than your browser stored Favorites or bookmarks, social bookmarking allows people to rank a URL too as you see in delicious that how many times a URL has been bookmarked, other than that searching within social bookmark search engines allows you to get better search results as these are more humanly marked URL's and not a typical search engine which do spider and index. This also helps the owner of the website that how popular the site is and how people are responding by adding them to their social bookmarking. by the invent of social search engines social bookmarking plays important role in ranking webpages which leads to more indented information and filters data to make it information.

So would like to say Happy Bookingmarking.
Permalink | Report