While there is a Stocks Instant Answer already in place, it'll be good to show more information like the historical stock charts for 1 week, 1 month, 1 year...
Similar to what Google Finance currently shows.
I understand that DDG uses Xignite's GetGlobalDelayedQuote API for their Stocks Instant Answer. Is there one that returns historical stock charts?
Not too sure how much it'll cost though. Xignite's pricing is only known upon enquiry.