Social bookmarking is a technique of storing, organizing, and managing bookmarks or links to web pages on the internet, using online tools or platforms. These tools are known as social bookmarking sites or social bookmarking websites. Users can save, tag, and share links with other users and create a network of shared bookmarks. This helps in discovering and sharing new and interesting content on the internet and is also a useful tool for search engine optimization (SEO).

Social bookmarking sites are web-based platforms that allow users to store, organize, and share links to web pages. Some of the popular social bookmarking sites are Reddit, Pinterest, StumbleUpon, Digg, Delicious, and Diigo. These platforms allow users to share their bookmarks with other users, comment on bookmarks, vote on bookmarks, and create social networks around shared interests.

Social bookmarking can help users discover new content on the internet that they might have otherwise missed. By saving and organizing links, users can create a personalized library of useful resources that can be accessed from any device with an internet connection. Social bookmarking can also be used to collaborate with others on projects, research, or other shared interests.

When it comes to SEO, social bookmarking can be a useful tool for building backlinks to a website. Backlinks are links from other websites that point to your website. They are important for SEO because search engines like Google use them as a signal of the quality and relevance of a website. The more high-quality backlinks a website has, the more likely it is to rank higher in search engine results pages (SERPs).

However, not all backlinks are created equal. Search engines distinguish between two types of links: do-follow and no-follow links. Do-follow links are links that search engines follow and use as a signal of the quality and relevance of a website. No-follow links are links that search engines do not follow and do not use as a signal of the quality and relevance of a website.

In social bookmarking, both types of links are used. When a user saves a link to a social bookmarking site, they can choose whether to make the link a do-follow or a no-follow link. By default, most social bookmarking sites create no-follow links to prevent spam and manipulation of search engine rankings. However, users can manually change the link to a do-follow link if they want to pass on some link juice to the linked website.

Do-follow links can be beneficial for SEO because they pass on link juice to the linked website, helping it to rank higher in search engine results pages. However, it is important to note that do-follow links alone do not guarantee higher search engine rankings. Other factors such as the quality of the linked website, the relevance of the linking website, and the anchor text used in the link also play a role in SEO.