A tardy reply. But I presume there could be some evidence? If you try to think of any, can you? If not how could anyone have much confidence in this whatsoever?

LW and SSC do this without issue

I've taken those surveys for years, and it's true that they've often contained questions that would get this (EA) community's jimmies severely rustled, without any problems or complaints or concern trolling. At least, that's my impression, as someone more familiar with the rationalist community than the EA one.

Could you expand on that?

It looks like there's a Christians and EA Facebook group, though only Christians can join. But someone could join it, ask there, and report back?

Plausibly, are any methods promising for us?

Yes indeed! Who is that team? Am I right in thinking it's Ryan Carey who owns the site?

Yes, they make for very interesting browsing!

Interesting - is there empirical evidence that this in fact happens?

if you accept the EMH the returns are the same.

How come?

I assume its not something you'd want to devote much of a sum that large to, but small sums could support EA actions and projects via the EA funding network that Ozzie Gooen and Diego Caleiro and Bob Cordwell have started.