Important Metrics to track in Digital Marketing

Digital marketing has emerged as one of the important medium of communication.You can easily spot the surge in advertisement $ spend on this media.Initially companies were opting for this medium just for sake of experimentation but now that phase is over.The digital media in 2011 is going to be a serious affair.As a marketer you have to show ROI for the spend on this channel. We are going to share some metrics which every digital marketer should track: