Reported by rini.irg, Chilling Effects Clearinghouse is a mechanism to empower web folk who get the scary, classic Cease and Desist notes.
I’ve gotten one of these myself, back in 1997. You can still find the questionable items in the Flash part of my portfolio, because hey, it was an example of my work, and still is. I was never pursued on the issue.
Mind you, I’m not cavalier about such things – these must be assessed on a case-by-case basis. However, much of what lawyers produce is hot air.