I came accross this post on a website that talks about a spy tool that allows you to see which other sites the owners has, based on the analytics account number. I had never heard of something like this before, and searching on Google for it wasn't very succesfull either. "It wasn’t until about two years ago that I discovered something which scared me a little: If I hosted one site on Google Analytics, anyone could find out which sites I own in the same account. Not only through logging into my analytics account, but by using nifty spy tools online which crawl for analytics and Adsense duplicates (the same code, but on different sites)." http://www.viperchill.com/internet-empire/ Does this really exist? And if so, does anyone know where I could find this, or what the name of this tool is?