I have no experience. Just wanted to mention the prominent case of a solo teenager winning a hackathon for her Chrome-extension relating to TV shows http://www.motherjones.com/media/2013/05/meet-17-year-old-sa...

I'm kind of kicking myself for not doing more chrome extension work. We consume such a variety of information and Chrome has huge flexibility in working with that info...seems to have a lot more potential usefulness in our day to day lives, and plus, you don't have to learn a new IDE and language