Can I use stock quotes provided by Yahoo or other on my Commercial Website. If not, can you suggest a free stock market data provider, which can I use on my commercial website. Also, please let me know if it is entirely impossible.
I don't know what exactly you had in mind, but you can get free stock market widgets with live data for your web site here: http://www.sanebull.com/widgets (I haven't used it myself, so I can't vouch for it ,but it ooks good)