thanks for the replies guys, But I live in India. I am thinking of learning Ruby and Rails. what do you guys think?
It seems like people from your area do very well on elance.com and rentacoder.com Why don't you check it out and see what kinds of projects dominate, and learn those technologies.
Note that they do well because they charge seriously low-ball rates. The wages are probably good after the currency conversion compared to what's available in India, but don't go in expecting to find any decent-paying jobs. This might be a good short-term fix, but I wouldn't expect it to provide stable income for 5-6 years anyway, and the income will probably not be very good, especially since you will be competing with other offshore'd developers. Practically the only reason anyone uses offshore coders is because they cost 1/3 what American coders cost.