Thank you !!! I just went into settings and I auth link a lightning wallet and it authenticated 😎 but what is the purpose for that ? What is that wallet now do ? I know I probably I ask a lot of simple questions but I really want to learn more. Thanks 🙏🏼

That then becomes the method you log into SN. Your prior method (e.g., via Twitter, or e-mail account, whatever) will no longer work. You can switch back, but there's currently only one auth per account.