I've always wanted to know the HN score of pages I stumble upon. I've also wanted a simple way to see the HN discussion about the page I'm currently viewing, so I built "What HN says".
It is similar to HackerNews'd [1] extension, which I only discovered after I built mine... Well, "What HN says" has the advantage of showing the score inside the icon. Also, it is built only with Javascript by using the great HNSearch API [2].
It is my first Chrome extension, so please fork it and improve it!
[1] http://mfairley.com/hnd/ [2] http://www.hnsearch.com/api