A Google search for "save the world" yields 11,000,000 results. A search for "harm the world" yields 242,000. Also, the top results for the latter are framed as cautionary tales, rather than normative instructions, or communities for how to accomplish the malignant goal.
Saving the world is a very commonly expressed sentiment, which is why compiling a list of people who want to save the world seems a little redundant to me. A list about people who have saved the world might be a tad more useful.
As far as I know, an infinitesimal amount of the world population consciously sets out to be evil, or to do harm to the world. It's more a case of the road to hell being paved with good intentions. I'm pretty sure there have been many studies about this, though I'd have to dig for them again. Perhaps someone else can post them.
Neither the stated desire nor the action implies donating to charities. Even you have admitted to this in the past.
I thought your claim might be based on the replies to your HELP! I want to do good thread. In that case, I thought I should point out that no equivalent "HELP! I want to do bad" or "HELP! I want to be completely benign" threads were ever created.
One could easily verify your claim by making such posts, and counting the replies. If one wanted to be really accurate about it, one could also go through the post history of the respondants, to be sure they're not just being contentious, but truly ill-intentioned.
Extending the survey to the population at large would be similarly trivial. One could tell people on the street about a one-question survey, and if they decide to participate, alternate between: "Do you want to save/improve the world?" and "Do you want to harm the world?"
(This might be a fun exercise for the Toronto LW group, now that I think about it. Both to find the answer out for ourselves, and to get people thinking about the subject. Because thinking often precedes action. Or at least it should... )
Only Disney villains want to harm the world. The alternative to "wanting to save the world" is "using world quality as a free variable when optimizing for other purposes" (that is, not caring). There's no reason for a "HELP! I want to do something unrelated to saving the world" thread.
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.