Didn't Facebook try something like this years and years ago in the form of Facebook credits, going so far as to even disallowing apps from having their own curr

Didn't Facebook try something like this years and years ago in the form of Facebook credits, going so far as to even disallowing apps from having their own currency? I wonder how this is different, besides the whole "blockchain" bit, because otherwise it's just a rehashed idea with makeup on it.