How to correctly use wire tacks to run cable along baseboard?

I've Googled this to no end and haven't found a close-up photo or video of how the tacks are properly supposed to go along the baseboard.

I am using nail tacks to keep Cat5 cable running along the wall, but the tacks/nails barely hold onto the drywall, which makes me wonder of i should be nailing them into the actual wooden baseboard moulding, instead of the wall just (immeidatley) above it?

Only one out of every 5 tacks feels like it has a good grip to thw wall, and it's inconsitent where. (i.e. doesn't seem like it's every 18 inches).

Can anyone offer any advice or is this just the way it is with these things?

PS. I live in a rental, so this is my only option. I am not going to start trying to run cables through walls, and trust me, this will be a step up from the blue masking tape that held the cable across teh floor for the past 4 years :) That is, if i can get the tacks to tack!

Submitted November 30, 2014 at 08:13AM by whatthehellisit1 http://www.reddit.com/r/DIY/comments/2nt7wf/how_to_correctly_use_wire_tacks_to_run_cable/