"Save the world" is a subset of "improve the world" where saving is improving by a lot in a way that the world really needs it. "Improving the world" can mean settling for a smaller improvement, but probably doesn't mean "improving in every way so it will include saving the world". If people stop wanting to "save the world" because they weighted their desire to improve it in lesser ways anywhere near their desire to save it, to sound less egotistical, to avoid the applause light, or to dissociate from people who think they're saving the world by raising awareness or making a list of people who say they want to save the world, or whatever, and the world doesn't get saved because of it, I will be sad.
atucker wants to save the world.
ciphergoth wants to save the world.
Dorikka wants to save the world.
Eliezer_Yudkowsky wants to save the world.
I want to save the world.
Kaj_Sotala wants to save the world.
lincolnquirk wants to save the world.
Louie wants to save the world.
paulfchristiano wants to save the world.
Psy-Kosh wants to save the world.
Clearly the list I've given is incomplete. I imagine most members of the Singularity Institute belong here; otherwise their motives are pretty baffling. But equally clearly, the list will not include everyone.
What's my point? My point is that these people should be cooperating. But we can't cooperate unless we know who we are. If you feel your name belongs on this list then add a top-level comment to this thread, and feel free to add any information about what this means to you personally or what plans you have. Or it's enough just to say, "I want to save the world".
This time, no-one's signing up for anything. I'm just doing this to let you know that you're not alone. But maybe some of us can find somewhere to talk that's a little quieter.