You just watch and profit from what others have already done. Now, at this point, you should be able to see the potential of these tools. However, they're not perfect by any stretch of the imagination. First, the most well-known ones are off the market (sold out) and most of the ones still available cost an arm and a leg. But, another key problem is. They Often Require You To Install The Spying Program On Your Own Web Host! And, for nearly all advertisers, this is a major problem. It means on normal shared hosting packages, you can only check a few hundred keywords (or 1 small campaign). The only other option if you want to monitor more is to get your own personal server. But, this comes with serious expense and baggage, especially for the non-tech savvy user. The bottom line is if you want to profit from more than a single campaign, then a solution already set-up for you is a must. Moreover, what you need is. An Affordable Ready-To-Go Ad Spying Syst...