Benefits for Subscribers? Need some tips.

Lately a lot of people have been registering on my site and I realized I don’t have much of a reason for people to do so. I’m trying to think of ways for people who take the time to register to benefit them in some way. All there is, is the ability to make comments but that’s about it. I could make a page that only they could access but not sure what I would put on it. Could make a forum to discuss things but that’s not exactly rewarding. Anyway if anyone has some ideas on this subject, please fire away.

(The site is for a non-profit org based in Uganda for kids in need, so it’s tough to think of ideas on rewarding subscribers.)