Social bookmarking services allow you to save or bookmark your favourite web sites online and to share them with others. Using a Social bookmarking service is like saving favourites to Internet Explorer or any other web browser but with added benefits:

Some advantages of social bookmarking

• You can access your bookmarks from any computer or device with an internet connection
• You can share your bookmarks with others (although you can also keep any that you don’t want to share private!)
• You can “tag” bookmarks with relevant keywords to help you (and others) to retrieve them easily.

Services

The following services offer Social Bookmarking: Delicious, Diigo, Digg, Connotea and Stumbleupon. For a longer list see http://www.philb.com/iwantto/webpages.htm
Things 9 and 10 use Delicious.

More about Tagging

Tagging is a facility used by many Web 2.0 services – not just bookmarks. It allows you to associate keywords or phrases with particular items (for example pictures, videos, bookmarks, catalogue records etc) in order to make them easier for you and others to retrieve. You can add as many tags as you like which makes it easy to describe items that cover many different concepts.

It is also possible to use “shared tags”. These are tags used by people who want to share items on a particular topic. To facilitate this, users tag relevant items with an agreed shared tag. For example, to share items with other people participating in the Oxford 23 Things programme, add the tag “ox23”. A search on ox23 will then reveal all the items shared by programme members.

Thing 9

1. Sign up for a Delicious account at http://delicious.com/ (You can use the Yahoo log in details that you set up during Thing 7 on Flickr). 
NB (Update for 2011): There are rumours that Yahoo is going to shut down Delicious. You would be wise to make sure you back up any bookmarks you save here regularly. For more information, and instructions on how to do this, see this post.
During the sign up process you will be given the option of downloading the Delicious “bookmarklet”. This is a useful button which sits in the “links” toolbar in Internet Explorer and other internet browsers and allows you to bookmark web sites to Delicious as you browse. Install it if you wish. If you're not sure you can always install it later.
2.If you haven't used Delicious before, take a look through the information in “How do I get started?”
3. Save at least five of your favourite web sites as bookmarks and give each tags.
If you have installed the Delicious "bookmarklet" you can save web sites to Delicious simply by visiting the web site you want to save and clickingin your links toolbar.
If you haven't installed the "bookmarklet", log on to your Delicious account and click "Save New Bookmark" (top right) you will then have to enter the URL of the page you want to save followed by its title and tags.
4. Save your blog and/or another web site on the theme of web 2.0 as a bookmark. Add tags and this time also include the “ox23” tag so that other members of the programme can find the bookmark.

5. Choose “Tags” / “Explore” and search for the tag “ox23” to view bookmarks shared by other member of the programme. Save any pages that look interesting to your own Delicious account.

For "Thing 10" we stay with Delicious and look at library use of Delicious and Delicious networks.

1. Several libraries in Oxford are using Delicious to recommend web pages to readers. Take a look at the Delicious page of one of the libraries listed in the web 2.0 directory. (Alternatively, if you prefer to look at an individual’s Delicious bookmarks check out Phil Bradley's Delicious page @ http://delicious.com/Philbradley )

2. You can add other Delicious users to your network so that you can easily view their bookmarks. Add one of the Libraries listed in the web 2.0 directory or another Delicious user of your choice to your network.

First you need to know the Library or user’s username. You can find this out by navigating to their Delicious page and copying the last part of the URL (e.g Philbradley, vhllib, HFLOxford, NuffieldCollegeLibrary, EDLIBOxford, earlybooks).


Then choose “People” / “Go to user” and paste in the username.


Finally choose "Add to my network" (on the right).


2. Navigate between your own bookmarks and the users in your network. Choose "Network" to view the bookmarks of users in your network and choose "Bookmarks" to view your own bookmarks


3. Record your impressions of using Delicious networks on your blog. Don't forget to tag your post "Thing 10"

More things

1. Subscribe to the RSS feed associated with one of the delicious users in your network by clicking on the orange RSS icon at the bottom of their list of bookmarks. Note: you can subscribe to bookmarks with a particular tag by clicking the tag first and then the RSS icon.

2. Use Delicious network explorer (http://www.twoantennas.com/projects/delicious-network-explorer/) to find other users to add to your network.