Looking for a Site

Does anybody know of a Catholic site that acts as a "clearinghouse" of sorts for Catholic charities, a site that says "This charity is good" and/or "This charity is bad"? I thought maybe the USCCB would provide a list of endorsed charities, but it doesn't (not that I could find, anyway).

Also: There are sites out there that rate charities based on the charities' percentage of giving (___% of each dollar donated goes to charity). I can't seem to locate them now. Any links are appreciated.