Ok, I promised myself I wouldn't mention this ever - but I have been inspired.
BA (I bet you didn't guess I was going to mention them!) Premier card members (or that) can choose their membership number - much easier to remember that way!
Mine is my date of birth: ddmmyyyy.
So know you know.
The only other one I can remember is Hilton Hhonours. The rest are a blur and can stay that way.
I think One-Pass want me to remember that number it is really cool (or rude, I bet from that Baobab can guess what digits it contains), I also received a second membership pack from them this morning, although I don't need two cards, I appreciate the extra upgrade certificates! CHEERS!
MF