What are some alternatives?
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Diigo - Diigo is a powerful research tool and a knowledge-sharing community
Pocket - When you find something you want to view later, put it in Pocket.
Pinboard - Pinboard is a personal archive for things you find online and don't want to forget.
Google Bookmarks - Google Bookmarks is a free online bookmark storage service, available to Google Account holders.
start.me - A Modern-day bookmark manager. A place for your favorites. A news feed (RSS) reader. A browser startpage. A portal for your team.