In everyday life I use my name first name-surname with no title. However, if someone asks me what my title is I reply Dr (that's what it is!), similarly if a form of any sort requires me to fill in a title I write Dr, so yes, it is there in my low status frequent flier membership.

As for whether I get preferential treatment for it, I don't believe so, most of the time - although if I'm in harrassed mum-of-two mode it can change attitudes...... I'm certainly not pretending to be an MD by using the title Dr - as most people know PhDs were called Dr way before physicians jumped on the bandwagon,

tj