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IIRC the telemetry involved here was only run on the nightly/developer edition versions. Or something like that. The restrictions on telemetry on release vers

IIRC the telemetry involved here was only run on the nightly/developer edition versions. Or something like that. The restrictions on telemetry on release versions are pretty stringent. It's possible this was measured on release, I'm not aware of the details, but I suspect it wasn't.

kevincox 10y ago
From my understanding release is opt-in only. (My understanding is based upon whenever I install Firefox it promts me to enable telemetry, which is disabled by default)
- Manishearth 10y ago
  Right, but I think even then you opt in to a very restricted subset. Again, ICBW here.
- cpeterso 10y ago
  You are both correct. :) Firefox telemetry is opt-out on the Nightly, DevEdition, and Beta channels, but (mostly) opt-in on the Release channel. The opt-in telemetry from the Release channel has limited use because it is not representative of all users. Here is a list of Firefox's telemetry measurements. Those that are opt-out on the Release channel are tagged "releaseChannelCollection": "opt-out". Adding a new opt-out measurement requires an additional privacy review. https://hg.mozilla.org/mozilla-central/file/tip/toolkit/components/telemetry/Histograms.json https://hg.mozilla.org/mozilla-central/file/tip/toolkit/comp...