A site for expanding full reddit threads. Replace the "www.reddit.com" in the url of on a comments page with "reddit-thread.glitch.me" to use load every comment on that page. For large pages, it takes a few moments to load.
Here's a bookmarklet to do that for you in one click: expand reddit thread
Tip: the second time you load a given page, new comments will be marked with a green bar and the text "~new~", which you can C-f for.
It's broken on Safari, sorry. Seems to be a problem with the library I'm using to talk to Reddit's API.