[trasz]

(Note: DoS not literally, of course, but by feeding it with so much fake metrics that the signal - metrics for actual, live users - gets lost in the noise.)

Or perhaps forget about VMs, and have some kind of browser plugin that performs "fake browsing" - to throw off analytics - with your real cookies, but hidden from view, so it's not annoying to the live user browsing the web in the usual manner.