求关于社交网络看法的英语作文,或者是对解决环境问题做法的看法,400字左右的,

求关于社交网络看法的英语作文,或者是对解决环境问题做法的看法,400字左右的,

社交网络看法的英语作文
A social network is a social structure made up of individuals called "nodes", which are tied by one or more specific types of interdependency, such as friendship, kinship, common interest, financial exchange, dislike, sexual relationships, or relationships of beliefs, knowledge or prestige.
Social Networks are groups of people who share interests and who interact in a variety of ways via software on websites. These include file-sharing, chatting, messaging, exchanging photos/video etc. Social network sites are usually free to join. Include Myspace,Facebook,Bebo,Orkut,LinkedIn and so on.
We define social network sites as web-based services that allow individuals to construct a public or semi-public profile within a bounded system, articulate a list of other users with whom they share a connection, and view and traverse their list of connections and those made by others within the system. The nature and nomenclature of these connections may vary from site to site.
The Importance of Social Networking：Social networking can help a business gain contacts, clients, and increased public awareness.Even entrepreneurs who run small businesses from their homes can take advantage of this resource to set up a global presence.
To make the most of social networking, it's important to fully understand the concept of social networking and how it can be applied in ways that will help you grow your business.
Social networking is making its mark in history these days. In fact, it is progressing so fast, it is leaving the news media in the dust. Everyday people are reporting news faster than a whole news team.