To hear an idea, no. Though I do sign them when working with a client if it makes them feel more comfortable while we work with each other (which is understand

To hear an idea, no. Though I do sign them when working with a client if it makes them feel more comfortable while we work with each other (which is understandable since I often need to do thorough research and gain access to source code to do my work). Other than losing a potential piece in my portfolio I feel I don’t lose much in signing an NDA in many of those cases.