Yes, I start having the bug of the multicopters! I am guesting many more in this forum! This is my second build and I desired to build the main frame out of PCB instead of plywood like before. I've also include the power distribution on the bottom layer of the PCB in order to have a cleaner setup with the power cables!
(http://https://farm8.staticflickr.com/7485/15861487085_7213ff9e8b.jpg)
(http://https://farm9.staticflickr.com/8663/15242655603_230a6e1f30.jpg)
It looks like the PCBs are having many more applications than just building circuits. I've used them before for front panels in some projects and now for frames for multicopters! The result after the assembly and the electronics look like that
(http://https://farm8.staticflickr.com/7521/15676174777_daedd91e69.jpg)
If you want to have a look of the full setup process have a look here:
http://embeddedday.com/projects/making-a-quadcopter/ (http://http://embeddedday.com/projects/making-a-quadcopter/)