Reasons why I added it.

Some people ( I ) like to read the comments first, if I see links, if I like the domain of or I deduce it is meaningful to me, in this case "etsy". Then it increases my likely hood of reading more.

If in a few days I think, "aahh what was the name of that stat thing written in node". Knowing I found it here plus a little google magic. Im there. "site:news.ycombinator.com node etsy"

Having upvoted your link ( in my saved stories ) the comments here begin to act as a form of "bullet point notes".

Most of the reasons above are to make it easier for me to find your article at a later date.

As I write this, I realise, a nice little application would be one which follows the popular links here into the article in question and "intelligently" pull out interesting links and associates them with this post.

Throw in the ability to personalise the data using your own white lists of domains, keywords to look for and it would be pretty sweet.