Discretion is the better part of CRAZY.

What organizations, outside of secretive government agencies, are so tight-lipped that an innocent Facebook post expressing excitement about an interview would be enough to "increase[] the chances that someone at the organization gets wind of your blabbing and decide[] you lack the discretion to be a good fit"?

The more likely result is that you don't get the job and look silly in front of your friends, but there are much more embarrassing things on Facebook.