First and foremost, social bookmarks should be used to organize your favorite websites and bookmarks in an online storage. This online storage can be accessed by other people (if you allow them to)...and this in turn, helps in spreading the word about your favorite websites.

In terms of marketing, social bookmarks can be used to promote products, websites and services (given that you have many friends and social contacts on the social bookmarking networks)

The same goes for social communities. You can use it as a vehicle for promoting your products and websites to those people on your friends list.

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