Hi Jothi,
Well I have to be honest and admit that I haven't really looked at it for several years. I was involved in the early planning stages for the Sun web services exam, and at that time it seemed like a very confused set of technologies. I can tell you that we spent probably 5 times longer than usual trying to sort out objectives for this exam!
So, I really have to say that you shouldn't worry about my opinion

I'm sure that in the right places there are some compelling reasons to look at these technologies. FWIW (probably not much), my opinion is that it got overhyped for a while, and if the hype has settled down, it should just be another tool in the toolbag, good for some things and not so good for others.
hth,
Bert