[alttab]

It would be interesting to see an auto-extend feature like Facebook does with the timeline. Keep scrolling? We will AJAX load them into the page in batches. That should do ya. No buttons necessary, full comment history the further you go, and you don't show more information than you originally ask for (just a couple of comments).

[Jach]

I've been using this for some time (though on HN it seems to choke on author-comment pages, I haven't taken the time to update the rule): https://addons.mozilla.org/en-US/firefox/addon/autopager/

It's such a better experience on every site when things auto-load as you scroll down.

[sahaj]

chrome version: https://chrome.google.com/extensions/detail/mmgagnmbebdebebb...

[cabalamat]

I very much hope pg doesn't do this; I find it very annoying.

[danvet]

As some other commenter already noted, this breaks browser text-search. In case you want to quickly checked whether what you want to say has been said already (and upvoted that comment instead or add something as a reply).

[sans-serif]

As long as it doesn't grow at the same rate as Twitter's, this should scale.