I recently came across a new technique for electronics prototyping that I haven't seen before. It is called the Manhattan style and looks like this:
It uses a single sided copper coated board as a ground plane, and you cut up a second board into insulated pads. You super glue the pads to the board to match the schematic, and solder components and wires between pads. Anytime a component connects to ground you solder it to the ground plane. Given that this was on a Ham radio site I imagine the technique must be to mitigate RF noise.
A further elaboration is called the Pittsburgh style where the ground plane PCB has traces and pads etched onto it like this:
The build then uses through hole components as if they were surface mount devices and solders them to the pad. Again this was a Ham radio site so the large ground plane is probably a noise management strategy.