I’m not sure where you are going with this because as far as I remember the general rule of the internet was, everything you put out there can and will probably be seen by everyone. So if you don’t want some creepy mid 40’s guy drooling over your sexy underage bikini pics, well don’t put it on the internet?..
I thought the initial topic at hand is more being able to see what other people like (or drool over). So if you’re adding likes to your spittle while browsing through flesh-filled bikinis, remember that others can easily see your likes (in two senses of that word). It’s a reminder to the browsers, not the bikini fillers.