Yeah probably, but I was talking in terms of a general guideline for interviews. I learned the hard way that you shouldn't give anything extra to your potential employer that may harm your chances or anything that is unrelated to the job.
About 3 years back, I needed a new job badly and landed an interview at a great company. The interview went perfect and I could tell the interviewer was very impressed. I felt comfortable as the interviewer was quite friendly and we talked about a lot of things unrelated to the potential job. I was sure I'll land that job but after 2 weeks or so, I got an email stating that I wasn't selected. I was really bummed and quite pissed.
Anyway, after a few months I was talking to my cousin and that interview came up. As it turned out, that company was partially owned by his friend. So the next day, he told his friend my details and that I interviewed at his company and to find out the reason why I wasn't selected. Well, I wasn't selected because during my small talk with the interviewer I told him how dedicated I was to a personal project of mine and that I do not find a lot of free time for extra curricular activities because I usually work on my personal project in that free time. They thought I was too invested in my personal project and as they had some tight deadlines for that time, I wouldn't be able to dedicate extra time for them. Other than that, they were highly impressed with my experience and technical skills. I thought that was a really shitty reason to not give me a job as I would have totally been able to give them extra time when required and I needed that job badly. After that I decided to keep my mouth shut and only give out information that is necessary. Some of the things may seem very minute to us but the person taking the interview may very well make a big deal out of it. Sorry for the long story.