You can express your generosity in ways that are virtually limitless. This was what I wanted to convey in 'Giving 2.0' - that whether you have $10 or $10 million to give, if you identify the right opportunities and make the most of your resources, your impact can be tremendous.

Philanthropy is often seen as society's risk capital. That means the onus is on philanthropists, nonprofit leaders and social entrepreneurs to innovate. But philanthropic innovation is not just about creating something new. It also means applying new thinking to old problems, processes and systems.

How I see my career is very much as an entrepreneur in the field of philanthropy.

Online, you can become much more than a reactive donor - you can become a proactive, strategic, collaborative philanthropist, improving your giving every day by tapping into the wealth of philanthropic resources available at the tap of a keyboard or the click of a mouse.

The first stage in a technology's advance is that it'll fall below a critical price. After it falls below a critical price, it will tend, if it's successful, to rise above a critical mass, a penetration.

Light-field photography is a transformational technology that needs a transformational product to introduce it. For the first time, we have a light-field camera that's going to be for everyone - not something in a huge room in a research facility.

The technology actually seemed to come at just the right time to make the Hulk - Mark Ruffalo was really able to play both characters.

I am in a band that was born on the Internet.