AV,
It would be very helpfull if you can include about the brokerage charges tht apply on derivates. Like the one thread showing how icici brokerage charges were very high than india bulls. Some kind of a chart with all mostly used online trading sites.
Also have a section for people to post there sucess/failure stories abt the kind of trading they have done and how much they gained or lost. This would be like a practical experience more informative than all the theroies that we read in books.
I would like to volunteer to help you building your site. I have expereience in building sites.
Good Luck,
Ravi