There is a generation of skimmers. It's not that they don't want to read in-depth content, but they want to evaluate what the content is before they commit time. Especially on a mobile phone - you don't have the phone, or cellular data, or screen size to be reading full-length content.

It's the scale that Yahoo brings - and that user base - that I really want to build products for.

I put together an iPhone app called TrimIt and released that in July 2011. About a month later, the private fund of the Hong Kong billionaire Li-Kashing cold emailed me and expressed an interest to invest, but they didn't realize I was 15. They thought it was a U.K. company with a team.

Yahoo to me, as the founder of a company, is one of the biggest opportunities you could have; it's one of those classic Internet companies.

One thing I'd like to do is angel investing in small companies. That's what's exciting, and if you are lucky to have a bit of money, you can take those risks.

I was using Twitter a lot on my phone, and was realising there was a massive gap between the link on the tweet and the full story. If you could come up with a summary layer to show in Twitter, that would be awesome.

I don't feel like a different person. My motivation has always been to do technology apps and companies, not making money. Just because the money's come, nothing's changed.