According to Qijia.com, SNS refers to social networking services, including social software and social networking sites. It also refers to the existing mature and popular social information carriers, such as short message service. Another common explanation of SNS: the full name of SocialNetworkingServices, namely "social website" or "social network". SNS also refers to SocialNetworkSoftware, social networking software, which is the next generation of personal-based network basic software built by using distributed technology, or P2P technology. So SNS is a common social networking software.

The SNS user base is huge and naturally aggregated, and the massive users of SNS websites are extremely common, covering all regions and industries. Among these massive users, they are gathered together according to certain rules to form various groups, which are indispensable groups in marketing. A solid real social circle and SNS website social circle can keep the vast majority of users firmly on SNS website and stick to sticky communication, which is much more sticky among users than other non-social networks.