Thanks for being part of GoDaddy Community! Who sees your website would depend on who you share your posts with on Facebook, you can review and control this within your settings on Facebook, here's how: https://www.facebook.com/help/246629975377810. Hope that helps!
Lisi - GoDaddy | Community Moderator 24/7 support available at x.co/247support
Facebook allows you to choose an audience that you’d most like to reach with your post. This does not keep it from showing to others but can enhance the chances of it being seen by those in your target audience. You can select a preferred audience by clicking on the targeting icon when adding an update.