Thank you for all of your responses, they have helped a lot.

One thing that interests me is how much analysis would have to be done to
distribute the graphs?  For example, would posting a simple graph of the
price history, or the spread between two futures be acceptable without
license? Or would only more involved graphs be acceptable?

Thanks again,

-Andrew

On Fri, Oct 7, 2011 at 12:44 PM, Dirk Eddelbuettel <edd@debian.org> wrote:

>
> On 7 October 2011 at 12:05, Brian G. Peterson wrote:
> | On Fri, 2011-10-07 at 11:12 -0500, Dirk Eddelbuettel wrote:
> | > Google/Yahoo actually pay the exchanges. That came up when Google
> | > started to show real-time data in an Ajax-y form (that you can easily
> | > program against) and some news stories at the time reported what deal
> | > Google had struck with the NYSE etc.
> |
> | Of course they paid the exchange.  So Google/Yahoo (obviously) have
> | redistribution rights.
> |
> | The 'terms of use' almost certainly don't allow *you* to redistribute
> | that *data* though.  Thus my comment about consulting relevant
> | contracts.
>
> Agreed. My response merely aimed to dash some cold water on your statement
>
>   take advantage of 'loopholes' in the data pull methodologies provided by
>   Yahoo/Google/etc.
>
> as this is in fact not a loophole. The cgi interface at Yahoo! is fully
> aware
> of people programming against it, and I have both supported that interface
> (via the Finance::YahooQuote module in the godforsaken Perl language) for
> users, and deployed it daily myself for about a dozen years. No issue
> there:
> Yahoo pays, we get to use it, I doubt we can redistribute, consult a lawyer
> for details, news at eleven.
>
> Andrew also asked about the dissemination of derived analysis (graphs etc).
> which I think that is fine because that is your work rather that their raw
> data.  IANAL.
>
> Dirk
>
> PS There was also a 'not' missing in my 'program easily against ajax-y'. It
> is not easy, or we all would have 'free' quasi-real-time data now.
>
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