Sounds like a great idea, a way for low-income folks to supplement their income. In my case, for example, I earn less than $900 a month, am 59 and only have 20 hours a week of work. Property tax and car insurance are the biggest burdens, and I usually have to buy food with a credit card (we make a bit too much for food stamps). Just an extra $100-200 a month would make a world of difference. I've known about Bitcoins since its inception, but only got involved the past couple months in mining. Seeing how it was supposed to go up and up, I invested (on credit) $900 in an one ASIC rig, and another $2000 for GPU scrypt mining with building 2 new rigs and upgrading another. All this hoping that after the ROI it would give me about 50% more income a month to pay bills. I've only mined about $600 so far in 7 weeks due to the price downturn, but seems like a good investment given time.
As for your idea, a new coin based on a needy persons identity on Facebook or elsewhere who could sign up as a verified identity could work, then a pool set up with passwords given out only to people who maintain a good standing with the group and demonstrate need. Perhaps some type of CPU coin, where it wouldn't be so much the hashing power but "proof of presence" on the network to say that they are working/needing it, and then a fixed reward for the presence there alone. Just as an experiment, I've been mining memorycoins on 3 CPUS for the past week, and they only net me one every 3 days which are only worth a penny, but that doesn't take away from my mining other altcoins with my GPU's (which I would never give up). This sort of thing would give "presence" on the pool, and then the pool could distribute the rewards to members who are active both there and on Facebook. For some people just $2-3 a day would be a big help. This would also be an incentive to get a lot of folks interested in altcoins, many who have never heard of them before and be a boost to the "brand", including to Bitcoin. The coin would need to be stable, and each person should be able to earn that. Then as you say, too, someone could earn more for getting new people involved and having them join and download wallets, among other things.