I put large "sawblade" type picture hangers on the back of these speakers using a couple small screws. A good sized nail in drywall (at a slight downward angle) has been good enough to support them on these hangers. A good, inexpensive way to wall-mount these reasonably lightweight speakers.
You can easily mount these to a wall. Heck, you could even mount these things to your ceiling if you wanted to. Mounting is easy, it's the buying of the mounting brackets that gets tricky. These things are only about 6 1/2 pounds so most brackets should be able to handle the weight, but it's always a good idea to make sure the brackets you are buying will be able to support the weight of the speaker you are planning on fixing to the wall.