katy steger:
So when rendered "Invisible", you can see your post, but no one else can. When you sign out you will see that your post is not visible.
Quick technical note: In most browsers, instead of signing out you can see the page in "Private mode".
Here is how you can do this in firefox:
https://support.mozilla.org/en-US/kb/private-browsing-browse-web-without-saving-info 
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