顺便挂个链接：

https://github.com/isaacs/npm/issues/2694

再挂个链接（不会认为在打广告吧，）：

http://ebirds.sinaapp.com/index.html

You can use this mirror (which fetches the original content from registry.npmjs.org). All modules up to date:

npm set registry http://85.10.209.91/

或是

npm set registry http://165.225.128.50:8000

To reset: npm set registry http://registry.npmjs.org/