People r watching Aarushi case because it is creating a suspense "who is guilty". Even the serial "Karamchand" was very popular once. So, people are able to associate themselves with the case and imagining themselves as "Karamchand" or desi Shrelock Holmes. Who would like to associate to the Gujjar fools who were once kings (Raja Bhoj and many other kings) and now have come to verge of asking ST reservation instead of working hard to earn their lost reputation. Gujjars want media attention which they shall never get. Aarushi case does not need media attention but it is getting because people know well that it can happen to anybody.