社交网站类似国内人人网
图片版的Twitter，网民可以将感兴趣的图片在Pinterest保存，其他网友可以关注，也可以转发图片
Yahoo
Google搜索
MSN
推特网站，类似国内微博
Reddit is a network of communities where people can dive into their interests, hobbies and passions. There's a community for whatever you're interested in on Reddit.
