Pragmatically, the domain is displayed after the title and such a practice would (barring any functional changes) replace, e.g., "(wsj.com)" with "(archive.{is|ph|today|whatever})". The "true" domain could be retrieved from the archive URL but I wouldn't imagine that it currently is, and then enters the question of which archive domains should be supported.

Past explanations:

https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...

It's free karma farming for those who want to post archive links for pay-walled content. No harm in letting a few karma leak out in return.

I post the archive links quite frequently. The only more prolific archive link poster I've noticed is @neonate.

Let me tell you, I ain't in it for the karma. Upvotes are rare enough that it's not worthwhile if that's your goal. Across hundreds of times I'd estimate I've averaged ~1.2 karma per, if that.

I do it as a courtesy to be nice / less of a jerk, because I really dislike popups and paywalls, and out of appreciation. I always enjoy the read more when someone else has already taken care of it.

When you see one pinned at the top, it's very likely because Dang has marked it rather than community support in the form of votes. People even downvote the archive links quite frequently.

Shrug

HN points are the dumbest game ever. On the other hand, the interactions and content are occasionally amazing.

It's mentioned in the FAQ

>It's ok to post stories from sites with paywalls that have workarounds.

>In comments, it's ok to ask how to read an article and to help other users do so.

... more at the FAQ.

Often the paywalled site is the original content, which is why it's encouraged to lead with that.

Many paywalls were circumvented by a simple procedure, disabling the java script, but sites have slowly become more guarded using other means.

I only wish there was a means to search the web, and turn off all paywalled sites from results or advertising.