There are a ton of causes out there, and people have reasons for why they decide to give their name and hard-earned dollars to a particular one. Mahala is bringing attention to RAINN - The Rape, Abuse, and Incest, National Network. There isn't much you have to say to explain that, it is what it is. It exists in our society, it's sad, and for many people it's very personal.
If you have a few minutes pop over to see what Mahala has to say, and maybe donate a few bucks or join the team. Like I commented on her blog - it's a lot better than anything I've been spending my money on lately and it might just do some good. And if money is just too tight right now - spreading the word is great too.