Delicious is a bookmarking/favorite web application, in that it saves and archives the URLs that you like. Of course you can save your bookmarks/favorites in your browser, which I do with Google Chrome (Bookmarks). I use Google Bookmarks for mine, as well as Delicious (which I use for my public bookmark sharing web application). I also use Wonderpage (see https://onetoday.wordpress.com/2011/02/02/wonderpage/ ) to visually show my Delicious bookmarks as thumbnails of the page.
Why do I use both Google Bookmarks and Yahoo’s Delicious (currently owned by Yahoo anyhow). Well there are a number of reasons. Firstly I prefer to use the Cloud for most of my Internet tasks, which will generally always allow me access to my data no matter what computer I use and/or wherever I am. Using both also allows me to have a readily available backup – which is always wise I think. Of course I also like to allow visitors to my Blogs, websites and so on, to have access to sites that I think are fairly useful and valuable.
Anyhow, have a look at Delicious – it is in my opinion the best bookmarking application in the Cloud.
I suppose there is no real reason to actually use this web application (not that you have to use any I guess). Most web users generally have some form of bookmarks or favorites as a mechanism for remembering URLs. Wonderpage is a means of visually remembering URLs, with a thumbnail view of the web page being remembered in a grid/list of other such URL memories. Wonderpage is just another way of sharing your favorite bookmarks with others (or for yourself).
There is an add-on for Firefox and an extension for Chrome. You are also able to import bookmarks in an HTML file and from Delicious.
If I have to be critical, there seems to be no way of receiving much in the way of online help – FAQ, etc. It is also difficult to see just how you can link to your public page/profile.