Many of the in-incubation YC startups tend to exhibit a bit of secrecy around what they're doing in my experience. I was at the TC party two weeks ago and met

Many of the in-incubation YC startups tend to exhibit a bit of secrecy around what they're doing in my experience. I was at the TC party two weeks ago and met a few current YC class founders who weren't willing to share even their name just a vague "we're solving a problem in X industry". I'm not sure if secrecy until launched is a directive/suggestion from YC or if it's something each YC company decides on their own.