Most of the routers i have seen are surrounded by Wires cables, Remotes Boxes etc. It is not wise to surround your router with metal containing objects as it reduces the speed and signal strength of the Wireless connection considerably. I would be a good idea to keep it in a clear open space in the corner of the room and such.
This is actually a very good point which I have never thought of before. I know that keeping my router in a certain position gives me a better signal so I am going to remove the clutter from around it and see if it makes any difference because I do get a poor reception sometimes.