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Pirates, you say? Anyway, yeah, without getting into legal stuff, both the official Pokemon site and places like Netflix stream a select number of episodes, so always good to check there. For smartphone users, there's also an official Pokemon TV app, which I believe has a slightly larger collection of episodes than their website.
Since there's not much of a discussion here though and we don't want to condone any piracy, I'm going to close this thread. But Google is always your friend!