Duplicate "like this" option visible for person who likes it


If "like this" option would be visible for person who like concrete post, not only by person their post is liked, it would be great.
I mean when I click "like this post", only author of that post can see it, not me. It would be easier to "mark" interested informations (posts) for me, not only "whole threads", the more so because if thread has 10 or even more pages it's difficult to find information I need ("like this")