Debarghya, you're not kidding. I got corporal tunnel with all this typing. Any rate, this is my last post for awhile, as I am getting ready to leave for the day.
You guys hammer my thread, and I'll be back later.
With regards to your question, the absolute similarities are found in the forex markets by virtue of the inalienable mathematical associations. (If anyone does not know what I ma talking about here, then ask me, and I'll prove it. I did that somewhere in this thread, but I know it has to be buried by now.) As far as other markets are concerned the sub-markets of the country's main indices are related by the sum association. If the DJIA drops huge, like it has done, then other markets that are comprised under the DJIA umbrella also drop in retrospect. The same can be said for Nifty, DAX, etc.
As far as crude, gold, and the DJIA, there is no absolute technical relationship. Therefore, it does not make for an absolute determination with regard to trading. Gold, silver, platinum, and copper are all related to the USD (I can prove that too.), because of the cross relationship. The reason gold has pummeled of late is because of USD strength and gold weakness merging at the same time. Looking at the gold chart, it was predictable, but also looking at the individual indices and using them as a cross reference (for benefit of this conversation) also made the fall predictable.
If you are looking at cross trading, then only consider those markets that have concrete mathematical relationships, then compare the indices. That is JMO, but I know of no better way to cross trade.
I might do a little segment on that later to prove what I am saying, because cross trading is a very viable way of trading.
(LOL, did you really expect just a few words in the answer?)