Instagram was created because there was no single place dedicated to giving your mobile photos a place to live and to be seen.

Photos were seen as the most private type of content, and 'Instagram' really flipped that on its head and said photos can be really public.

In the past, people have looked at photos as a record of memory. The focus has been on the past tense. With Instagram, the focus is on the present tense.

Our goal is really to make sure that 'Instagram', whether you're a celebrity or not, is a safe place and that the content that gets posted is something that's appropriate for teens and also for adults.

I've always been into taking my photos, cropping them square, putting them through a filter in Photoshop.

It helps to see the world through a different lens, and that's what we wanted to do with Instagram. We wanted to give everyone the same feeling of discovering the world around you through a different lens.