The difference? YouTube didn't loose anything. Facebook looses it's iconic brand: the white on blue 'like', that is just positive and teints the whole FB brand positively.
Oh, and people would use those things 'correctly', it's just too embarrassing sometimes. A simple 'like' is much more diplomatic.
Oh, and people would use those things 'correctly', it's just too embarrassing sometimes. A simple 'like' is much more diplomatic.