Here at iSpionage we like to study campaigns from advertisers who spend a significant amount on PPC advertising and appear to be doing a good job managing their campaigns. One such advertiser is Uber, the now famous taxi reservation and ridesharing app. From what we can tell, Uber is spending as much as $500,000 to $1,000,000 per month on PPC ads, although we have to provide a disclaimer that those numbers are based on estimates since AdWords is a bidding system which means it’s impossible to know exactly how much Uber is spending unless you log into their account and look for yourself, something we obviously can’t do.