It's always nice to put this into perspective: there are
many countries in which the average income is (much) less than $100
per week.
Per week? Try per month. That source you linked to shows the average income
per month. The people living in the bottom ten African countries on the list earn from $38 - $92/month. Getting into a campaign like this crappy one is like winning the lottery for them.
Unfortunately nothing can be done besides tagging the participants. And they don't care. I doubt theymos will interfere unless the campaign goes on a spamming spree. By the looks ok if, that won't be the case.