http://www.html-js.com/qa 前端乱炖问答
http://segmentfault.com segmentfault
http://www.dewen.io 德问
http://www.oschina.net/question 开源中国问答
http://stackoverflow.com stackoverflow
https://news.ycombinator.com/ask Hacker News
http://ask.csdn.net/ csdn