Within Google's Webmaster Tools, you have the option of "ratting
out" your competition by submitting a form to Google regarding
link sales and such that your competitors (or anyone for that
matter) are doing - or not doing, but you want to be malicious
So let's spin that around...let me ask you all if you would
help out a competitor by advising them on some technique you see
them doing, or not doing? Would you help them?