Yes, I agree. I also agree that Similar should pick up by the phrases, which I guess only picks up by one word. I'm sure @ek and @k00b or someone else has already made a issue for it and it should be better very soon.

As of now, I think we should better search with the post title phrase to see for similar posted earlier. This is a little more time sucking but it actually saved me share at least three already posted similar news yesterday.