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.

....well maybe when I'm 50 and just don't care anymore!