Pinterest - iPhone App

Pinterest is a pinboard-style social photo sharing website that allows users to crate and manage theme-based collections auch as events, interests, hobbies etc.
Users can browse ither pinboards for inspiration, "re-pin" images to their own collections or "like" photos.
Its main mission is to connect everyone in the world through the 'things' they find interesting via a global platform.

Its also a good source to find images to paste onto your Powerpoint slides.