App Highlight: Pinboard
Pinboard is one of the few apps that I don't mind paying a yearly fee to use. It's a simple, Easy to use cloud-based bookmarking service. Google Bookmarks without the data mining.
It features some interesting social features, including sharing links with your network, and a feed of what's popular. This alone could replace a good chunk of what we use social media for (if only all of our friends agreed to use it).
Personally, I keep all of my bookmarks private. I don't have anyone in my networks. I never look at the popular bookmarks feed. I still find Pinboard to be a nice tool. I can use my own custom tags to organize links.
I can add bookmarks from any device. The website it fast, and I can even expand my search a to include cached version of the site contents in addition to the usual title+tag search.
I've been using it for years, and I'm very pleased. The site has been stable and reliable. It's been compatible with many devices. Check it out https://pinboard.in