Haifeng's dashboard

The right way to get recommendations:
This doen't work:
http://www.postrank.com/subscriptions...{tag}.{format}?num=10

how to create a subscription with api?
I tried "subscriptions/subscriptions.js",
i can 'get' the info successfully,
but cannot use 'put', I got "Unable to put data: 401" error,
which means 401 unauthorized? but Why I can use 'get'?