In reply to Harold Jarche.

I came here to say this same thing. Raindrop.io is so good. I used to use Delicious, Diigo, and Pinboard. Eventually, I landed on Raindrop and have never looked back. There are so many things I like about it, but one thing is that you can make an RSS feed out of any of your collections of bookmarks. You can also share collections of bookmarks with other people (as in all contribute to the same folder/collection of bookmarks). I could keep gushing, but will stop myself for now.