I agree.  I've also found it a bit paralyzing to browse these boards.  I find an organization I think is doing great work then find a post laying out how the organization is not as good as it seems and I don't want to 'waste' my money on a sub-optimal charitable donation. 

I should say, Domini Impact Fund also uses shareholder proposals and proxy voting to try to push their sustainability agenda, but I'm not sure how affective that is.