[ayende]

FWIW, I once got a cease and desist letter because "company-xyz" found that we were using a subdomain "company-xyz.customers.our-service.com".

They discovered that because they were monitoring the CT logs. And they were concerned about trademark issues. It ended up being one of the teams in "company-xyz" that had opened an account (under the company name, of course).

But that is just a small note that people _are_ monitoring those.