Thanks for the feedback!
1) I used HN's June and July "Who is Hiring" threads as a starting point and listed more jobs from the companies that posted there. I manually listed only the jobs with a salary range so there's no automatic crawling right now. I setup a couple of scripts/pages to make the process very easy for me though. All jobs listed are fully remote.
2) There are also company pages for the jobs listed (e.g. https://remotefriendly.com/companies/posthog.com/). They're pretty basic right now but I plan to add a lot more detail in the future.
3) Definitely on the todo list. You can just use ctrl + f for now since the since the site design is simple.