ETA: i bought a GoPro Hero2 in September. just sold it a couple weeks ago on Ebay.
why? i never used it. i'd used it 3 or 4 times trying to set it up, got the WiFi Backpack and remote so i could use the app. still didn't like it. I tried to like it, but i just found it to be a huge PITA with piss poor battery life.
sold! i wanted to focus on my DSLR skills and getting a thunderbolt display so i sold a bunch of other crap i had laying out too. Monitors, Video Cards, PC, Games, misc. crap all to soften the blow. -but that's me, i hate clutter and when i want something, i'll buy it. if i stop using something or stop liking it, i sell it. it's that simple.
-all at a loss, but not that bad since i keep all the boxes / hardware... so i got back $500 and some change to soften the blow of $1k display.