Giving small amounts of an allergen to modify the immune response is also the philosophy of allergy shots, which are commonly given for various kinds of pollen.
ThisLife, which uses cloud storage from Amazon Web Services, takes a holistic approach, merging photos from various places, and also offers a timeline of favorite shots, facial recognition for labeling people and gets rid of duplicate photos.
Since Kinect employs cameras to determine the position of various limbs, it can offer video calling and "reaction shots" as demoed in Microsoft's E3 press conference.