[patapong]

Perhaps their detection logic is running on Google cloud /s

[throitallaway]

I believe Downdetector displays user reports.

[brentm]

Yea I am pretty sure that if you're checking if a service is down your essentially casting a vote that indicates that service is down.

[lysace]

Kind of a missed opportunity for Ookla - who's running both downdetector.com and speedtest.net.

The have software running in most ISPs around the world:

https://help.speedtest.net/hc/en-us/articles/360039164793-Ho...

(OTOH, it's not always trivial to define/detect an outage.)