It would be really useful if in our profile we have one simple check box which blocks all GAGAers below 16 or 18. So the way it works should be kept simple. Either we keep them. open, or we don't and this option should only be available to people above 18... or 21 whichever makes more sense.
Most Helpful Girl
If they're going to do that, then make the cutoff 18 since that is the legal age of majority in most countries.
However, people already sign up to the site with fake ages, and something like this isn't going to stop it from continuing. I believe it will actually just encourage the younger crowd to sign up as 18+. I've said it many times already, but there is absolutely no way to enforce your suggestion without people having to share very personal, private documents like birth certificates or passports that show your official date of birth upon signing up for an account. Even if we had to share an image of those documents, the images themselves are easily doctored.
How do I know for sure that you're really 48? I don't. How do you know that I'm actually 25? You don't. It's up to us as users to be mindful of the age of the question asker, and if they are under 18 then you give an age appropriate answer. I understand the concerns people have about under 18 users being on the site, but it's the Internet and people lie.1