There’s anonymity, and then, there’s anonymity. Some people use anonymity to hide themselves. Others use it to find themselves.
Honesty box and slambox—I’ve not used either—sound like they make people free to say whatever. Stupid stuff. When they are mad about someone, they can say what they want anonymously. It’s kind of a communist thing, where you inform on your fellow community members without anyone knowing who informed. It’s just a weaselly, cowardly thing to do.
On the other hand, places like fluther allow you to be anonymous if you want. You can have a personality here that no one can link back to your real identity. Then you can talk about issues of importance; share things you could never share to people who know you in real life. That kind of anonymity lets you explore who you are and helps you build your understanding of yourself.
Building yourself online can lead to being a stronger person in real life. You can find out that you can share things that you thought you couldn’t. You can find out what you can talk about and what you can’t talk about. You can become more comfortable with things you’ve been ashamed of.
So yeah. Anonymity on the internet is both our enemy and our friend.