Exploit? No one's forcing people to solve captchas, they do it because it's a good deal for them. I'm from a country that was relatively quite poor just 15-20 years ago, and I can say stuff opportunities like were positive, not exploitative.
That's what exploitation is. You see people in a bad situation, and think "oh hey, I can profit from that." Exploitation (usually) isn't slavery, and most people who are exploited voluntarily enter into that relationship.
Genuinely curious -- is there a reason not to exploit someone who voluntarily enters into that relationship? I always assumed 'exploitation' meant forcing people to do things they didn't want to do.
Well, it's a moral question and therefore there is no universal answer, everyone decides it for themselves. And given the fact that when presented with a choice between starving under a bridge or working a back-breaking work for 12 hours per day, most of the people historically have voluntarily chosen to labour, one could argue that indeed it is entirely ethical.
