I'm going to install network cable like in this guide (this guy is
installing coax cable, but the idea is the same):
http://www.prettyhandygirl.com/2013/...tallation.html

When drilling a hole in the floor between two walls, should I put the hole
in the middle, or at the bottom of one of the walls?

In the guide, the person apparently drilled at the bottom of one wall and
avoided drilling into the beam below the floor board. Is this better because
it doesn't weaken the structure of the house, or is it insignificant?