HEATKEYS

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 friends, upload an unlimited number of photos, post links and videos, and learn more about the people ...

想不想来一次环球旅行，携程社区记录了全球数十万个城市的旅游景点，包括旅游攻略、地图、交通、美食、住宿、购物、玩乐、行程安排、当地向导、分享游记、旅游问答等等。要旅行，从携程开始。

马蜂窝?蚂蜂窝!靠谱的旅游攻略,最佳的自助游,自驾游分享社区,海量旅游景点图片、游记、交通、美食、购物等旅游攻略信息, 蚂蜂窝旅游网获取自助游,自驾游攻略信息更全面

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

人人网 校内是一个真实的社交网络，联络你和你周围的朋友。 加入人人网校内你可以:联络朋友，了解他们的最新动态；和朋友分享相片、音乐和电影；找到老同学，结识新朋友；用照片和日志记录生活,展示自我。

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've been working on.

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

51766旅游网拥有数千家旅游供应网商开设的上万家旅游服务网店，提供旅游线路、酒店、度假村、经济连锁酒店、打折机票、景点门票、旅游租车、签证、会议等产品的预订以及景区景点、旅游攻略、游记、自助旅游等信息。