I think "pessimistic / optimistic" was meant in the computing sense, rather than the colloquial. But I completely agree that double opt-in is the way to go - i

I think "pessimistic / optimistic" was meant in the computing sense, rather than the colloquial. But I completely agree that double opt-in is the way to go - if the person you're asking feels burdened by the double opt-in, they can just tell you to do a direct intro in the future.