Tim O’Reilly responds to the Web 2.0 service mark controversy. It’s long and thoughtful, worth the read. But I don’t buy that Tom owes Tim and apology. Sending a c&d may be routine but receiving a c&d clearly wasn’t routine for this recipient. I’d imagine receiving a c&d isn’t routine for the vast majority of people. This probably could have been anticipated. And however comparatively nice the letter may have been, it still ends with an implicit threat: “CMP reserve [sic] all of its rights with respect to your actions to date”. Bottom line, if you draw your weapon first, don’t go crying foul when the other guy draws a more powerful one and points it back at you.