Sorry for the awkward title... but if you found out that someone online (HelloBee or somewhere else!) was a friend in real life, would you tell them?

And a related question - if you found out a secret of theirs, would you tell them?

This is inspired by Wheres_C's post about her friend and my own friend! We have question/answer email groups at work and a friend posted a question about something related to her pregnancy. I debated whether or not to congratulate her or wait until she told me. She ended up telling me before I made up my mind!