At PokeTube we do not collect or share any personal information. That's our privacy policy in TL;DR. To improve our products we had to create a completely anonymous way to figure out how PokeTube is being used.
We use a tool called Piwik (A free software Web analytics system,see piwik.org) to collect information. By information we mean, aggregated data about things such as the number of visits daily/weekly/monthly to PokeTube. Learn more on our privacy policy.
You can see the source code of this website, here : On GitHub. For Piwiks source code, please see Here. We did not modify the source code of piwik, we only changed the configuration of data collection. see https://matomo.org/privacy/?menu for more information.