Gag is an advice site...if you want advice, you have to allow some responses that you won't agree with.
All the concern for privacy seems oxymoronic to me This is an advice site! By walling yourself off from everyone but people you already know, which is what people are largely doing with the private profiles, disabling invitations, etc...
You are pretending your Gag account is a Facbook page and only for tagging your fiends.
No if Facbook is what you want t's available to you, and has a much larger membership, and you won't be annoyed by people trying to...offer you advice! Or asking for yours!
Which is the purpose of the site!
You can already block messages from non-friends if you're concerned abut stalkers and the like. But you're going to have those on your Facebook page as well, unless you also make THAT private!
IF you want effective advice, then you should welcome steps Ike invitations, that create a sense of continuity here. You can easily ignore invitations if you want, or simply block notifications.
But it's strange behavior for someone who signs up for Gag, which is still, in spite of all the people who want to treat it as a Facebook alternative, an ADVICE site!