The idea is to catch the wifi waves that pass near your laptop without reaching it, and make them bounce into your wireless antenna.
I use it standing behind my laptop when i'm.. reading my mail..
..to make it.. load faster..
It actually nearly doubled the signal strength i got from a certain access point.
It's really easy you'll see, so get into it right now!
Step 1: Gathering materials
-A big cardboard sheet
-some light pipe
-Some other cheaper adhesive tape
-a wood bit
-some (pretty soft) metal parts you can cut and bend
-tools: screwdriver, saw