There's a gentleman I once knew a long time ago, I wanna know if he's here but I don't know how to look for him without just saying his name lol... Could I describe myself to him on the board to see if he will remember me? Should I mention the year he met me and where? lol  

I imagine anyone who has seen you, who is on this board, will send you a direct message when they see this.

Did you read thru your reviews and see if he is posted one? Then you could hit him with a P

I think you are out of luck then.  You said you don't even know if he is on this site?  Even if he was, unless you can say who you are, he might not get the message