Some sites allowing members to add page links as bookmarks in particular category and make those bookmarks available to the rest of the bookmarking service’s community. These types of service called social bookmarking service. In 2003 craze of this service is very high, since that time, hundreds of websites launched and they provide quality social bookmarking services. The most popular sites are Google Bookmarks, Digg, Furl, Reddit, Newsvine, Yahoo MyWeb, StumbleUpon, Technorati, Ask, Live Bookmarks, Simpy, Blogmarks, Facebook, Netscape, Slashdot, Hugg, Shadows, Backflip, Wink, Spurl, LinkaGoGo, Mister Wong, Feed Me Links, Netvouz, Magnolia, Diigo, Blue Dot, RawSugar and BlinkList.
All of these sites deliver targeted hundreds or thousands of visitors to your site within a very short time; some time within hours.
