For almost 20 years I've used the term "Engineer" associated with some other term as my job title. But recently I found out that this is not legal in the state of Oklahoma and in many other places across the world. The term Engineer and Engineering is reserved for those with specific Engineering training, degrees, and licenses. Wiki details some of this: http://en.wikipedia.org/wiki/Engineer
My place of business recently had legal notice that it had to cease using the terms "Network Engineer", "Director of Engineering", "Software Engineer", etc. The board that sent this is State Board of Licensure for Professional Engineers and Land Surveyors, http://www.ok.gov/pels/ and by state law they have the right to stop anyone from using the term Engineer if they are not licensed correctly.
Also I saw someone say they used the term "Software Architect", "Architect" is also a legally protected title in many places.
So now I'm a Consultant.... I've sent a letter to my legislators to complain about the boards actions as I feel that the term "Engineer" has become associated with someone who has a general area of expertise, not someone who has a specific license. But I doubt it will have any effect. :(