Dating and matchmaking services business has never been easier with the explosion of internet services. Just a quick google will show you a list of online dating services. Just take a look at Plentyoffish.com. The owner claimed to make easily 7 figure income annualy.
Another example is Positivesdating.com. They offer members of the HIV positive community a dating service featuring HIV positive personal ads comprised of a diverse, international community of HIV positive adults. The objective is to help their members find great matches, make new friends, form romantic relationships, meet life partners or even to receive helpful guidance and coaching from others in the HIV positive community.
Nothing beats helping people and make money at the same time.