I've read an article about Firefox+Qwant, I've been using Google Chrome for years but I want to protect my privacy so I've just downloaded Firefox with the Qwant extension. I would like to help Mozilla to make Firefox better but only if all my data (personal or not) are not shared with a third party, I will agree to share these information with Mozilla only if Mozilla keep information from its uers for itself. I've checked on your privacy policy and other links and couldn't find any clear information about it.