Top 10 Most Popular Social bookmarking

Arguably the most popular social bookmarking website, StumbleUpon is the easiest way to find cool new websites, videos, photos and images from across the Web. StumbleUpon has been around since 2001 and it has grown from strength to strength since it was launched.

Established in 2005, Reddit is an entertainment, social networking service and news website where registered community members can submit content, such as text posts or direct links. This social bookmarking website is particularly popular amongst bloggers who use it to share their contents as well as make new discovery.

Established in 2003, Delicious is another popular social bookmarking website for storing, sharing, and discovering web bookmarks. With Delicious, it's easy to build up a collection of links, essentially creating your own personal search engine. It's quick to organise your links so that when you’re looking for something, you can find it within seconds.

Established in 2004, Digg is a news aggregator with an editorially driven front page, aiming to select stories specifically for the Internet audience such as science, trending political issues, and viral Internet issues.

Launched in 2010, Pinterest is a web and mobile application that offers a visual discovery, collection, sharing, and storage tool. Users create and share the collections of visual bookmarks (boards). Boards are created through a user selecting an item, page, website, etc. and pinning it to an existing or newly created board.

Established in 2010, Scoop.it is another social bookmarking website where user can discover, curate and publish great content to get visibility online. Scoop.it offers its users to make their own screen and share it with other users.

Founded in 2007, Tumblr is a social bookmarking, microblogging platform and social networking website where users can post anything (from anywhere!), customise everything, and find and follow what their love.

Established in 1997, Slashdot is a technology-related news website, which bills itself as "News for Nerds. Stuff that Matters".The site features user-submitted and evaluated news stories about science and technology-related topics.

Folkd was launched in 2006 as a social bookmarking and social search website.. The website has grown into one of biggest services of its kind and currently lists over 10 million public bookmarks by more than 650.000 users.

Founded in 2007, Hacker News is a social news website that caters to programmers and entrepreneurs, delivering content related to computer science and entrepreneurship.