I agree with Kenneth. If the stickers were relegated to Categories, you don't see Categories unless you scroll / jump to the bottom. When someone was in US Rev War, WW I, etc, the sticker quickly identifies that the person was in the War, which may help someone to immediately know if that is the person they are looking for or not. If they have a sticker for Vietnam War, without looking at dates, etc, you would know that you have the wrong profile. There are many stickers / project boxes that identify projects that they are associated with and relegating everything to a category, again, you can't see them as easily as the stickers.