Reply To: If you do not have s'micha, can you advertise yourself as "Rabbi"?

The Rosh Yeshiva of Toras Moshe in Yerushalyim had (has?) the habit of calling everyone “Rabbi” (as in “My Dear Rabbi”).

“Everyone gets called Rabbi these days.

That is why Maran is used, so the editor can separate those who he/she thinks are the real rabbonim from the run of the mill “Rabbi” or “Rav”.

Now “Gavra” is a title with real Chashivus. As in “Hahu Gavra”. He is mentioned more times in the Gemorah than any other Tanna or Amorah.

Mr. and Mar (as in “Amar Mar” (second place)) are also acceptable.”

http://www.theyeshivaworld.com/coffeeroom/topic/rabbinic-titles