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Omegle shuts down for good
(www.omegle.com)
This is a most excellent place for technology news and articles.
Not sure that existed, but how would it work? There were no accounts and IPs are ephemeral.
Probably UUIDs based on fingerprinting the browser/machine. With enough js there's usually enough to qualify a person's activity as unique even with minor changes regarding updates or whatever. You can mitigate it by changing user agent strings or disabling some/all js or site permissions, but they can also block you from using the service for doing so, so ¯\_(ツ)_/¯.