It is easy for me as an advertiser or publisher of content with over 200k monthly uniques through Hubspot/Constant Contact's platform! I have been able get more qualified traffic from their network than we were getting before using them via my own website(s). Their reporting capabilities are very limited because they do not offer any custom reports like Google does which would be beneficial when trying figure out what data actually matters most about our campaigns - but it has helped us identify where there might need improvement by implementing changes such as moving some landing page tests into different ad groups etc so this was good at least initially while figuring things out!! We've found no issues yet though since switching away form google Adwords & other networks who don't provide natively within hubspots integration tools..