Bad, bad bad idea. Why not put your CC # & exp date out there too? Facebook is NOT private. What you put there is there forever for all to read - no taking it back. The whole concept is a disease that is sucking what common sense is left out of the brains of those who use it.
I ramble but privacy is very important. Unless you want to wear a T-Shirt to work with your ECCIE handle on it and an explanation of how the hobby works, keep your two lives SEPARATE.