This share is here mainly for my reference, but some others might find it useful. I'm trying to figure out how best to redeem my butterfly points. So, I started going through the organizations you can redeem points with and looking for their charity ratings. For many of them, I cannot find the information. But here is information I found on some of them, and I am thinking of redeeming primarily with the charities I can find good ratings for.
Oxfam America gets a five star rating - http://www.charitynavigator.org/index.cfm?bay=search.summary&orgid=4288
Opportunity International is also five stars - http://www.charitynavigator.org/index.cfm?bay=search.summary&orgid=4270
Kiva gets four stars (although as they do loans rather than direct charity, they are kind of a different thing than most of these organizations) - http://www.charitynavigator.org/index.cfm?bay=search.summary&orgid=12978
Trees for the Future gets three stars - http://www.charitynavigator.org/index.cfm?bay=search.summary&orgid=11443
The Marine Mammal Center gets three stars - http://www.charitynavigator.org/index.cfm?bay=search.summary&orgid=6201
The ASPCA gets three stars - http://www.charitynavigator.org/index.cfm?bay=search.summary&orgid=3286
All I could find on Population Services International is that they aren't BBB accredited - http://www.bbb.org/us/Find-Business-Reviews/name/population+services+international/
All I could find on Austin Pets Alive! is that they are not BBB accredited - http://www.bbb.org/central-texas/charity-reviews/charity-local/austin-pets-alive-in-austin-tx-90006839
Carbonfund.org does not meet the BBB guidelines - http://www.bbb.org/charity-reviews/national/environment/carbonfund-org-foundation-in-silver-spring-md-7605 - mainly it's a bit disorganized and it hasn't shown that what it does is actually what it claims to do, but it does seem to be trying to spend a lot of the money it takes in on what it does. It's also small, which may be part of its disorganization.
I can't find info on Humane Farm Animal Care, International Relief and Development, or climate path ecological fund,
If you read this and have any information to offer, please do comment. I don't know much about these charities, I just want to figure out the best way to help. And this is just what a little net research could turn up.