why did facebook buy instagram company. what is the advantage it is going to get by buying instagram ?

ANSWER TO THE ABOVE QUESTION 1. well facebook needed a software which would allow users to take pictures from their phones/laptops or desktops and directly share it on facebook. Instagram has the capability. So to get this capability they bought instagram 2. Instagram is also a very active social networking site and a possible competitor of facebook. So it makes sense in eliminating competition. They have not yet merged instagram in to facebook but i believe they will do it in future making facebook more feature rich