I have a hard time putting everything out there.
My background is in film and design and it's beaten into you not to talk about the specifics of what you are working on. Spoilers in the film community can lead to firing or lack of future employment ... and the design community is notoriously untrustworthy of anyone (Not to mention you've probably signed five NDA's during your first year of employment all of which seem to threaten the life of your first born if you even mention who your working with).