https://community.cisco.com/t5/community-feedback-forum/what-is-the-24-hour-rule-for-klm-live-human/m-p/5158819#M5567 community.cisco.com

What Is Social Bookmarking?

Social Bookmarking is one of the major part is OFF Page SEO. It is free of cost so just by submitting your websites at Free Social Bookmarking Site you will be getting a backlink from particular website. It is considered as one of the easiest way of building backlinks.