I don't need to because I don't work in the 'property industry'. I'm simply same as most here.. a property investor.
However, like DaveM said "Click on my profile, it has my profession clearly listed."
It does matter if you are in the property industry. It is best if you have a signature so that we can better understand your comments.
On a separate note, I would like to talk to you if you are a commercial real estate agent in Camberwell, Vic :)