The purpose of this feature is presumably for folks to take pictures of
This functionality could be a boon for those of us who write about games for a living and would really like to be able to take our own screenshots of PS3 games in HD. Xbox 360 debugs have offered this since day one – via a networked PC, no less – and we've been on Sony for a similar solution for eons. Unfortunately, PS3 debugs have different firmware than retail units, so our dream scenario may be limited only to finished retail games.
(Fun fact: Pressing the Lock and Home buttons on your iPhone simultaneously will take a grab of whatever is on screen and save it to your Camera Roll. Fun!)
[Via PS3 Fanboy]