for the sort of grants Martin Lesko is talking about. Personally, though, I don't see the US Govt or any other Govt lobbing out money as readily as ML and these websites suggest.
Somehow I can't see Uncle Sam paying any credit card bills. I think they collate all the information that is public anyway about what money you can claim in particular circumstances. Eg they will tell someone starting a business what aid they can get or perhaps what benefits someone who is disabled can claim