One of the important things to consider when arranging photo frames on a wall is to make sure all the frames go together well. They by no means need to be all the same, but they should complement each other. What I mean by that is that if you want neutral brown frames, then all the frames should be brown - you can mix light, medium and dark browns and you can even throw in a gold or bronze frame and you'd be just fine. It's okay to mix materials, too, like metal and wood, as long as you stick to the same color group.
This frame set is a great way to get started, especially if you'll have a large photo display wall with many photos. This set of frames are all alike (of varying sizes, however) but that's okay - all you have to do is add a few more individual frames to this set that are complimentary and you have yourself a great photo wall display.
If you prefer to keep things simple, you could create a wall frame display using just these 10 frames that are all alike. The price for this set of 10 wooden frames is unbeatable! See examples of photo wall arrangements
here.
If you love pictures and photography and haven't already heard of Photojojo - you've got to check it out. I've actually been a fan for a while now - I even bought their book which has some great photo projects and DIY ideas that are super-cool!
The Photo Clips (top and middle images at left) are cool, too - they are just small clear fasteners that allow you to clip photos together any way you want to build an arrangement for your wall. 
The Photo Rope (bottom left) is simply a 58-inch long metal line that you attach to the wall and it comes with 8 super strong tiny magnets that hold pictures to the rope wherever you want them - a very cool, sleek, and modern photo display! Oh, and it comes in 5 colors!
If you have a bare stairway and are looking for a place to create a photo wall display - the wall adjacent to your stairs can be the perfect place for a family photo display. The trick to creating a pleasing display is to make sure to follow the angle of your stairs. The picture frames can be hung somewhat randomly, but in a pleasing arrangement of course. Every two or so steps, measure the distance from the step to the bottom of your arrangement to ensure that it remains the same distance - the bottom of the photo display arrangement should be around two feet above the stair step just below it if at all possible. If that rule of thumb isn't possible, don't fret because as long as it's at the same angle as the steps and equal distance from the steps throughout the arrangement it'll look great.
The frames, just like in most arrangements, should at least be similar. They don't all have to be the same material, but should all be in the same color tone. Similarly, the photographs themselves should be either all color or all black and white. You can even incorporate collage photo display frames like the one pictured to the left here. Click on the collage frame or the one above it for more details on them. The picture at right is a good example of a great stairway family photo wall.
