We think it’s the most accurate, best-in-class SEM data available without drilling right into your Adwords account.
Every point about ranking or advertising that you see on SpyFu — every ad, every organic rank — can be traced back to a specific Search Engine Result Page *(SERP)* that we saw on Google. We keep a screenshot of every single one going back over 9 years to when we first started collecting data. It helps us back up what we say.
The figures like costs, search volume and number of clicks are estimates that come from other sources. This video gives better details about how we get that data.