Hi I need some advice here as my atty will not be in until Monday. I received an email this morning from one of my competitors along with a cease and refrain letter they typed up.

The problem is they do not want me to use their domain name as a keyword in my adwords campaign. I have looked all over the net, and every thing I have seen has said this is ok.

So is this something I should do (REMOVE THE AD) or just a competitor causing trouble?
Google's Rival Keyword Sales Go Wide - BusinessWeek