Does anybody knows a website that provide free historical daily gold prices (London or NY), in format of Date, Open Price, High,Low,Close?
I checked Kitco but they don't publish that detailed data.

Answer
you could try http://www.netdania.com . it is a forex data feed but if im not mistaken, they also have Gold and Silver price. You must sign up (its totaly free) and install Java in your computer in order to use the chart. once youve singed up - Log in, click on "chart station" on the left menu and click "try demo".

You can also try http://www.barchart.com but this website is not interactive and the charts are only updated at the end of the day.

Where can I get Commodities Futures data feeds/real time & history spot charts to post on my blog?

I've looked at Yahoo Finance and found stock charts but not Commodities...I need spot charts for energy, metals, grains and livestock that I can embed in my site.
Any suggestions?

Answer
you can see it if you sign up for one of the companies (fxdd,wwm,forex) but from the experience i can tell you that the feed is proprietary and no one will let you publish it to your site without a large fee.