I don’t think they make money. It’s an open source project where people donate their time as far as I know.

EDIT: I forgot to mention you can donate to the project. Something has to pay for web hosting, I guess.

I built a new PC two months ago and it’s the first time I didn’t get Office. Libre Office has everything I need and it’s free.

I can spend 17 minutes driving to work, or 1.5 hours catching buses. Easy choice for me.

I don’t see it that way. There are separate options to Favourite or Bookmark a post. To me Bookmarking something is so you can refer to it later, although nothing is stopping you using Favourites that way.