I like answers of some experience developers on stackoverflow is there any possibility of adding a follow / fans feature where I get notifications of answers to which guy I am following. I think most of the people love this feature and would be helpful for them to learn more stuff in short time.
Stack Overflow has always been about answers, not about users. Stack Overflow is not a social network, and it will resist efforts to make it into one.
If you want to follow a user, simply bookmark them, and check up on their recent activity occasionally.