They link to their pages on trade-based networks (facebook, linkedin, twitter), to trade-based collaborative software (slack) and to trade-based app stores (Google Play and App Store from Apple) because they have an app for phones. uBlock origin also blocked “amplitude.com” which is a “Product Intelligence platform helping companies build better products”. These things are not that bad, but I want to mention them, because else it’s a great service! You don’t need an account or pay money or so. You can just use it directly in the browser. Do they collect data? Yes, but not to make a business out of that: “8×8 is not in the business of selling personal information to third parties. 8×8 uses this information to deliver the meet.jit.si service, to identify and troubleshoot problems with the meet.jit.si service, and to improve the meet.jit.si service. In addition, 8×8 may use this information to investigate fraud or abuse.” (https://jitsi.org/meet-jit-si-privacy/) So I’d give them 4/5 blocks.