Delicious is a website that could be considered a wiki because people add to each other's sites, sign in and can add or edit or comment on lots of things. It is called a social bookmarking site because you put up on your home page lots of websites that you can comment on or tag. Each person can add hundreds of bookmarks to their page and add lots of tags. The tags allow each person to search these sites and see which sites other people like and what they think of them. The tagging means that each person can add their viwe and if they have seen these sites before and what they think of them. This encourages other people to go to these sites if thier friends like them and they can chat on and about these websites. That is how it has become a social networking site as well.
This is a video explaining about social bookmarking
Tagging on flickr has moved on a lot. Photos and videos can be geotagged. This, as I mentioned in my last blog, is if a camera has a gps tracking device, then the photos can be tagged on a map. manual tagging is also easy. This allows people to search and easily group photos and videos by the place or what is in them. this allows people to find pictures of themselves or a place that they know well. They can then tag something and each photo builds up a history and it has lots of information about itself.
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