I'm the founder of Nacho Analytics, and I can confirm it's 100% legal. Love the question, though.<p>We're not hacking into anyone's Google Analytics account or intercepting their javascript tracking - it's legit. It's a patent-pending process, and when you sign up we do load an analytics account real live visitors to <i>any</i> website.<p>My favorite thing about software is that when you do it right, it can feel like magic - or in this case black magic.<p>I'm happy to answer any questions you guys have.