In another life I used to be one of those third parties that scraped social media for usage metrics back when the APIs were much more permissible. I can tell yo

In another life I used to be one of those third parties that scraped social media for usage metrics back when the APIs were much more permissible. I can tell you that when we got to see internal numbers, we were at most 5%-10% off on all our key metrics. Importantly we were consistently off by a similar margin on each metric so overall our data was very high quality for this type of comparison.