GameInformer has held an interview with John Koller, senior product manager of the Sony PSP, as the Playstation Portable turns three years old.

I’ve picked out a couple of the key points from the interview below -

• The PSP price drop helped target the teen consumer market.
• The PSP-2000 made the PSP more portable, and a lot of consumers started adopting the PSP for music and for video.
• Sony are looking at a number of key launches — both software and peripheral — to really aid the sales momentum that they are seeing now.
• The PSP is primarily centered and marketed as a gaming machine.
• Not all development of the PSP has been planned from day one, such as the Skype function.