Removing (almost) everything you hang on the fridge works wonders: it's one of the best ways to give a kitchen a neater look. Those who don't want to have a completely "bare" fridge can at least do a good cleaning and periodic rotation (say, once a month).
Too many papers, photos and other odds and ends are often accumulated on the fridge, which contributes to a cluttered space. There are easy ways to move some items elsewhere.
Restaurant menus can be put together in a folder and kept in a drawer.
School paperwork, activity-related paperwork, invitations, etc. can be pinned to a board elsewhere in the house (in the office, near the entrance, in the "homework corner", or even inside a pantry/closet door).
Children's drawings or crafts can be limited to one at a time (or one per child). The rest can be kept in a folder per child and then transferred elsewhere (in a scrapbook representing a year, in a memory bin, in a frame, etc.).
Same thing with photos: you can choose to keep only one on the fridge at a time, and rotate them.