Should you log in with Facebook or Google on other sites or apps? Short answer: No. You’ve probably seen it on lots of apps and websites: buttons urging you to sign in with your Google or Facebook account. Sometimes it’s to let you share files, photos or emails. Other times it’s to use Google or Facebook as a quick way to log in ... My rule of thumb is to just say no. There are too many ways using these buttons can leak personal information or help Big Tech track you. There are some exceptions when it’s useful — but...