I would say that giving people hope in a hopeless situation isn't doing nothing. Regardless though, it's a pretty fascinating story. Did you listen to the song? You would have to be pretty quick at deciphering morris code to understand it. Also that video of the "t-o-r-t-u-r-e" blink is amazing, I had never seen that before.
A student of psyops would argue that the time and energy would be better spent on demoralizing the FARC and humanizing their hostages in order to temper the climate for politically-motivated kidnapping. I believe that's what the movie "Wag the Dog" was about. The CIA has been doing this shit for decades. The fact that the ad exec was forced to flee the country demonstrates the successfulness of PR in wars such as this. I'd seen the video before, but then I eat sleep and breathe this shit. As far as morse code...