How to Use Yahoo Finance API

A 'clearly unofficial' yahoo finance api implementation.

I just got a spam email from them via my work email ('Dear Null' lol).

They've gone a bit far with the naming, clearly a trademark violation.

I'd be interested to hear HN's thoughts on this kind of business model. Wrapping an API around a publicly available website / web service, providing some additional value (even just an api endpoint where none existed is of some value) and charging for it.

There are free packages in R (such as quantmod) and Python (and I assume other languages) to get data from Yahoo Finance.