Facebook 是一个联系朋友的社交工具。大家可以通过它和朋友、同事、同学以及周围的人保持互动交流，分享无限上传的图片与转贴链接，更可以增进对朋友的了解。

Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with fr...

Twitter is without a doubt the best way to share and discover what is happening right now.

Google+ aims to make sharing on the web more like sharing in real life. Check out Circles, Messenger and Hangouts, just a few of the things we&#39...

YouTube is a place to discover, watch, upload and share videos.

LinkedIn strengthens and extends your existing network of trusted contacts. LinkedIn is a networking tool that helps you discover inside connections t...

Prezi is the zooming presentation editor

Flickr is almost certainly the best online photo management and sharing application in the world. Show off your favorite photos and videos to the worl...

Good old Wikipedia, great new look

Vimeo is a respectful community of creative people who are passionate about sharing the videos they make. We provide the best tools and highest qualit...

A list of mostly liked photos and mostly followed users on instagram

Find what you want in a library near you with WorldCat, a global catalog of library collections.