You are correct, our users confirm the accuracy of the data. We can attest that the historical data is at least 99% correct. If we, or you, find an error, it is very easy to correct, because our site is a wiki. Additionally, visitors of the site make sure that malicious activity is corrected and reported to Wikiwealth. If you feel numbers are incorrect, but wish not too change the analysis on Wikiwealth, you can download the sheet and make changes or experiment with your own projections.