That's what boosts are for. You can see what others boost on their profile as a sort of repost. The like, is not a like, it's there for feature parity with Xitter. But every app and instance calls it something different, but generally it's a favorite button. So you have, boost, favorite, and bookmark. Boost are intended to be seen by others, favorites are for the original poster, and bookmarks are private for yourself. I've read that quote boosts are coming, but I'm not a fan of the feature. Find it to be really toxic. But we'll see how it pans out when the feature is implemented.